Osman Bey's strategic agreement with Sofia stirs conflict among the beys, raising doubts about trust and unity within the tribe. Meanwhile, Kuçar plots to isolate Osman Bey and exploit Hasan Bey's departure to incite chaos, and Claudius devises a coup threatening the fragile alliance between Osman and Sofia. As Bala Hatun and Halime embark on a perilous journey to find Alaeddin and Gonca, Alaeddin risks everything to save Gonca from Kuçar's ruthless schemes. Amid the shadows of captivity, Orhan Bey faces challenges that could either mend or deepen the rift with his brother. With his children's lives in peril, Osman Bey sets out on a bold mission, seeking both rescue and revenge, aiming to deliver a decisive blow to his enemies, Kuçar and Claudius.

Esenbike Hatun's dramatic arrival at Kayı Oba creates tension as she demands a hefty tax from Osman Bey or threatens to claim his daughter Fatma for her son Sargun. Osman Bey, resolute in protecting his family and people, devises a risky plan to escape this predicament while avoiding conflict with Olcaytu. Meanwhile, Bala Hatun, determined to find her daughter Halime, captures Sofia and stakes everything on negotiating her release in exchange for Halime’s whereabouts, uncovering a potential truth about Poena's identity.

The Mongol Commander Ulugan challenges Osman Bey at the Kayı Tribe, threatening his reputation and life, while the Mongols brutally torture Prince Orhan in Karacahisar, forcing Osman to plan his rescue. A poison spreads through the tribe, endangering lives, including Poena’s, as Alaeddin Bey seeks an antidote and Bala Hatun fears losing Poena without knowing she is her daughter Halime. Amidst these challenges, Osman Bey tightens defenses against the Mongols, while Ilbay devises plans to undermine them, leaving the tribe to navigate multiple critical threats testing their strength and unity.

Despite being taken to death row, Osman Bey remains hopeful. Meanwhile, Bala Hatun receives Esrigün, the commander of Gazan Han, and his adopted daughter. On the other hand, Malhun Hatun departs to assist the Kargın tribe.

Olof's personal stake in Yenişehir drives him to take risks, while his lover Frigg poses a threat to Malhun Hatun. In Constantinople, Kantakouzenos involves Ofelia, further complicating matters. Osman Bey takes on the responsibility of confronting and resolving the chaos, arranging a meeting with Olof in the arena.

As the allied enemies, Nikola, Targun and Petrus continue to stir traps for Osman, Targun ambushes Bala while İdris leads Bamsı into a trap set by Aya Nikola in order to seize the scrolls with Osman's plans for Anatolia. When Osman is alerted, he sets out with half his alps to find Bamsı, only to fall in Nikola's trap and have his tribe pillaged by Targun for the scrolls and a failed attempt by Dündar to become the Bey. Aksu is also killed by Targun before she can confess to Bala about Dündar and Hazal's misdeeds.

Göktug continues to spy for Osman at Balgay's camp while Osman recovers with the help of Şeyh Edebali and sees a dream which results in Edebali allowing Osman to marry Bala.

Balgay captures Osman while Böke, the Mongol commander who informed the monks about Sungurtekin's betrayal, supposedly allies with Balgay to save his life, however, with the help of Göktug, disguised as Kongar, Osman escapes but is severely wounded by arrows.

Osman ambushes Dündar and Zöhre, who were taking their daughter, Aygül, to get her married to Alişar, he sought to show them that he didn't kill Batur. He trusts Aygül that she believed him that he didn't kill Batur, however, as she didn't trust him from the start, when she is let go, she tells Alişar everything and asks him to save her parents. Later, Aygül's parents are freed because of her betrayal.

Kongar reverts to Islam and becomes Göktug after a contract is shown to him that he was actually bought by Balgay from a slave-trader. Meanwhile, Osman is tasked by the Aksakals to save his uncle, Sungurtekin, who was spying for them in the Margarit Monks and his betrayal is now caught, Osman succeeds and embraces his thought-dead uncle.

Dündar is given the Sançak Beylik, angering Alişar, and Osman takes back the dagger he gave to Balgay secretly through an operation at his camp, humiliating him in front of the Mongol leaders. Bala is wounded by some Mongols and now cannot produce a baby.

Osman, who has met the Aksakals, arrives in the tribe and gives Balgay Genghis Han's dagger in order to leave him and his tribe alone. Osman tasks Salvador to spy for him in Kulucahisar Castle, however, the cunning Sofia still doesn't trust him too much. Meanwhile, the tribe council, mainly Dündar, decides to expel Osman for rebelling against the Mongols. Osman later recaptures Söğüt with his alps.

Osman Bey is deeply disturbed by the kidnapping of Fatma Hatun, Saruca, and Yusuf by Lucas and Sofia, who demand Söğüt in exchange for Fatma. Though appearing to surrender, Osman Bey devises a plan to rescue her without losing Söğüt. Meanwhile, Karesi Bey, sensing Osman Bey's vulnerability, declares war and allies with Gencer Bey to strike. Lucas manipulates Yusuf and Saruca to uncover Osman Bey's strategies, testing the loyalty of Begüm Hatun and Bayhan Bey. Amid rising tensions, Orhan and Alaeddin take great risks to rescue Fatma, further intensifying the conflicts.

Osman Bey prepares to strike Byzantium and Karesi Bey by targeting Akhisar, while Karesi Bey enforces martial law in Karadin to strengthen his grip. As Osman Bey focuses on his conquest, Bala Hatun works to maintain peace amidst rising tensions between Gonca and Holofira, further aggravated by Begüm Hatun. Meanwhile, Sofia creates turmoil by kidnapping Fatma, Saruca, and Yusuf, shocking Söğüt Pazar. Bala Hatun swiftly takes action to rescue Fatma and restore order.

Osman Bey's pledge to protect the sacred Islamic relics elates the Kayı tribe but fuels Karesi Bey's jealousy. To thwart Osman, Lucas sets a trap in Karadin, complicating Begüm Hatun's situation. After her setback, Begüm plots to undermine Bala Hatun. Meanwhile, it's revealed that Cecilia poisoned Gonca Hatun, straining her relationship with Holofira. Orhan Bey devises a plan to kidnap Holofira from her arranged marriage, but they encounter a trap. Lucas and Karesi plan to financially damage Osman by building a bridge. Osman discovers Karesi's deceit. The unfolding drama sees Gonca's feelings towards Holofira change, and the possibility of Orhan and Holofira's reunion.

Osman Bey and Yakup Bey rush to Kestel to rescue their captive children, Orhan and Mehmet. The Tekfur of Kestel demands castles in exchange for their release. Yakup Bey agrees, but Osman Bey opposes, aiming to rescue the children and conquer Kestel. Yakup Bey blames Osman for Mehmet's capture, urging him to find the palace traitor. Alaeddin informs Malhun Hatun that Holofira is the traitor, possibly influenced by Vasilis. Orhan and Mehmet endure torture in Kestel Castle, unaware that Master Gera is behind Tekfur Makranos. Bala Hatun confronts Saadet Hatun, refusing to surrender the castles and imprisoning Saadet and Gonca. Yakup Bey negotiates with the Tekfur, potentially defying Osman Bey's stance. The situation escalates as Osman Bey must decide his next move.

Yakup Bey conquered Lefke Castle before Osman Bey and claimed to give it to him, but Osman Bey suspects Yakup Bey's intentions. A new enemy, Master Gera, arrives at the Edges. Disguised as a merchant, he meets Osman Bey, who invites him to Yenişehir. Master Gera's arrival brings chaos, and he plans to kill Boran Bey, Osman's trusted man. Malhun Hatun, aware of Saadet Hatun's grudge, plans a significant move against her. Meanwhile, Orhan Bey, disguised as a Mongol, takes a treasure and shoots Mehmet Bey, leaving his fate uncertain. Finally, Yakup Bey confronts Osman Bey, asking for allegiance one last time, and Osman Bey must decide his response.

Malhun Hatun is imprisoned for attempting to kill Ismihan Sultan. Osman Bey is determined to rescue her and refuses to leave her behind. Bala Hatun tries to persuade Bengi Hatun to testify truthfully, but it puts Alçiçek's life in danger. Lord Valens is aware of Osman Bey's plan to crown Sultan Mesud, and Ismihan Sultan plots a trap for him. Osman Bey finds himself in a difficult situation, cornered by these circumstances.

Osman Bey is captured by Sultan Alaeddin at Marmaracik Fortress. Sultan Alaeddin issues a death warrant, but Ismihan Sultan has a different plan for Osman Bey. She intends to have him abducted by Kantakouzenos and Olof, claiming he has escaped. Ismihan Sultan also decides to expel the Kayis from Yenisehir. The people face famine and disease, adding to their difficulties. Osman Bey and his tribe confront internal conflicts and external threats, making their situation challenging.

Osman Bey receives crucial information from Sultan Mesud about Ismihan Sultan's plans involving a significant seal. To counter her schemes, Osman Bey assigns Bala Hatun to acquire the seal. Sultan Alaeddin issues a death warrant for both Osman Bey and Sultan Mesud, leading to severe injuries for Sultan Mesud. Determined to protect the castles, Osman Bey takes action. Ismihan Sultan manipulates the situation in Yenişehir, worsening the famine, but Malhun Hatun devises plans to counter her.

Osman Bey is captured by Ismihan Sultan, and his escape attempts fail. However, Alaeddin Bey reveals that Osman Bey is in the palace under Sultan Alaeddin's supervision. Osman Bey confronts Sultan Alaeddin, who offers his release if Alaeddin Bey stays with him. Ismihan Sultan plans to seize Yenişehir and creates conflict between Bala Hatun and Malhun Hatun.

Osman Bey and his Alps attempt to capture İnegöl castle from Turgut Bey, but face opposition from Turgut Bey, Kantakouzenos, and Ismihan Sultan. Negotiations ensue, with Osman Bey demanding the castles acquired through sacrifice. Olof plans to meet with Ismihan Sultan. Meanwhile, Osman Bey works to install Sultan Mesud on the throne, unaware that Konya has been handed over to a Mongol commander.

Tensions escalate as Ismihan Sultan exposes Osman Bey's headquarters and plans. She seeks to hold him accountable and employs various strategies, including attacks by Olof and Frigg. Ismihan Sultan aims to isolate Osman Bey, seize his principality, and claim his properties. The conflict intensifies as they both strive to protect their interests and maintain their positions.

Osman Bey remains determined to conquer Köprühisar and is willing to take risks to achieve his goals. However, complications arise in the love story between Aktemur and Alçiçek, as Bayındır becomes an obstacle. Ismihan Sultan grows uneasy about Osman's ongoing conquests. Conflicts and challenges arise as Osman's ambitions clash with the desires of those around him.

Ismihan Sultan opposes Osman Bey's ambitions in Yenişehir. The control of the Marmaracik Citadel is contested. Osman Bey battles self-doubt while planning to conquer Köprühisar. Olof seeks new tactics after losing to Osman Bey. Intrigue and developments continue to unfold.

Osman Bey and his soldiers are trapped in a mine after Olof discovers their hiding place. Their survival is uncertain, causing growing concern. Malhun Hatun urges Bala Hatun and the soldiers to rescue Osman Bey. The main question now is how they will escape the mine and overcome the imminent danger.

The attack on Aktemur has greatly shaken Osman Bey's trust, leading him to establish a court to address the situation. Both Öktem Bey, who is accused of stealing gold, and his daughter, Alçiçek Hatun, who injured Aktemur Bey, will face trial. Osman Bey's decision to establish a court signifies his commitment to ensuring justice is served in these matters.

After Bamsı Bey's martyrdom, Osman Bey takes an oath to avenge him. Togay, meanwhile, develops an alliance with Nikola and establishes a large army to strike a last blow to the Kayıs. Togay, who enlarges his army with the soldiers he receives from Nikola, stands against Osman Bey and his alps in the battlefield. However, Nikola withdraws from the battle after having a prior agreement with Gündüz Bey, although Governor Yargucu arrives and takes Togay into custody.

Göktuğ helps Bala defeat Targun in a trap, with Bala eventually killing her. Meanwhile, Osman is saved from Nikola's ambush by Malhun Hatun, a woman requesting Osman for some land for her tribe of 1000. As Malhun settles in the tribe, she questions Osman about his plans. Göktug is made leader of the Cuman Turks, whilst Petrus and Simon demand compensation from Osman for allegedly being attacked. İdris is caught as a spy by Osman, although he is killed by Dündar before he can reveal his treachery.

Osman is alerted that a distant Cuman Turk tribe has been invaded by the Emperor and the Bey's daughter, Targun, is being taken captive. Osman rescues Targun and takes her to the tribe. However, Targun is betraying Osman, she spies for Aya Nikola to save her father, İnal Bey, who is in Aya Nikola's captive. Hazal also teases Bala that Targun was brought by Osman because he wanted to marry her for a child which she couldn't produce.

The 'dark knights' injure Osman very badly and everyone believes he is dead, however, Osman is actually alive but he only tells Gündüz, Bala and Selcan. Taking advantage, Osman conquers Kulucahisar Castle and kills Sofia in the process. Aygül, who is mentally ill, attempts to kill Hazal because she killed her mother, however, the arrow accidentally kills Burçin instead.

Subutay is beheaded, however, Sofia escapes with the help of Balgay. Kongar becomes a Muslim again after remembering everything but bids farewell to Konur, who was accidentally killed by him when he was drunk with the potion. In an epic showdown, Balgay is supposedly killed by Osman along with the supposed death of Cerkutay by Göktug in the presence of Sofia and her 'dark knights', a special sort of knights, who keep on fighting till they die. However, Cerkutay manages to survive the attack.

Aygül is currently mentally ill after she learnt the truth about Alişar. Sıddık's betrayal is caught by Sofia and thus he is martyred while Subutay allies with Balgay and Sofia to destroy the Kayı tribe in an attack. Osman, who is aware of the attack, prepares for it and therefore, Subutay's plans backfire.

Osman ignores Subutay's threats and beheads Alişar. Sofia escapes the Emperor who sentenced Yannis and most of the Margarit Monks to death. Hazal[v], Dündar's first wife, arrives and kills Zöhre for poisoning Osman and Bala's wedding food, which was given to her indirectly through Sofia. Meanwhile, Balgay finds out that Göktug has been betraying him and gives him a potion that messes up his memory and changes him into Kongar again.

Osman tasks Gündüz and Bala to invade Alişar's mansion where they are successful. Meanwhile, Osman captures Alişar when he is away and forces him to reveal to Dündar that he killed Batur. After seeing this, Dündar begs for forgiveness. Böke also dies in an ambush and Osman takes Alişar to the tribe and is ready to behead him only to be stopped by Geyhatu's commander, Subutay.

Zöhre, Dündar's devious wife who even had Gündüz kidnapped by Balgay earlier, plans to take Adelfa to Alişar in spite of Bala and Selcan through her adoptive daughter, Burçin.

Alişar pins the blame on Osman resulting in Dündar attacking Osman during the ambush. In Dündar's attack, Alişar, who is hidden behind the trees, aims at killing Osman with his arrow but accidentally hits Dündar instead. Balgay escapes but Gündüz, Osman's elder brother, successfully becomes the new substitute Bey of the Kayı tribe.

Osman Bey believes Sultan Mesud's treasure is the key to ending Yakup Bey's dominance. He tasks Orhan Bey with finding the treasure and Alaeddin Bey with monitoring Yakup Bey. Learning of the treasure, Yakup Bey is determined to claim it for power, setting the stage for a race between the two factions. As Orhan searches for the treasure, he crosses paths with Holofira, while Mehmet Bey, under his father's orders, plans to seize it, creating tension between him and Orhan. Meanwhile, Alaeddin's surveillance of Yakup leads to a personal moment with Gonca Hatun, where he questions her feelings for him. Elsewhere, Osman confronts the Sancaksız people for their actions, while tensions rise between Malhun Hatun and Saadet Hatun in the Uc Pazar, where Yakup appoints Cerkutay as patron. Osman and Bala Hatun travel to address unrest, unexpectedly encountering Yakup Bey, who claims the area as Germiyan's property, further escalating their rivalry over power and the treasure.

Osman Bey displays keen awareness of Commander Muzalon's actions and strategically launches a dual-sided attack, resulting in a decisive victory for Osman Bey and his forces over Byzantium and Muzalon's army in the Koyunhisar region. This triumph holds significant implications for both Byzantium and Anatolia, signifying the true beginning of Osman Bey's independent Beylic. Riding across the land, Osman Bey emerges as a respected leader, garnering attention and admiration from the East, West, and Turkmen Beylics.

Osman Bey and his warriors are trapped by Tekfur Valens, but Bala Hatun arrives to support them. Nayman ambushes Malhun Hatun and Fatma's life is endangered. Tekfur Valens discovers Osman Bey's camp, setting the stage for a fierce confrontation. Osman Bey's united followers are prepared to fight by his side.

Before the battle, Osman raids the Byzantines and seizes ammunition, before going to battle with the support of Turkmen and Seljuk forces. During the battle, Dukas and local Tekfurs are killed by Osman's forces, with Nikola and Helen escaping alive, and Turhan Alp being martyred. Meanwhile, Zoe tries to poison the pregnant Malhun Hatun but is caught and arrested. After the battle, Osman's son Orhan is born, whilst Bala reveals to Osman that she is pregnant and Osman decides to establish a state after visiting the Aksakals.

Osman Bey takes action to prepare for a war he will wage against the Byzantine army led by a commander named Dukas. Osman goes to Konya to meet with the Seljuk sultan, whilst Governor Yargucu, plans a move against Osman Bey. Increasing his power with the arrival of Commander Dukas in İnegöl with his army, Nikola thinks that he has the opportunity he is looking for to drive the Turks out of the edge. Bala Hatun, who learns that Osman Bey will have a child, tries to control her feelings and takes a step towards Malhun Hatun. Osman Bey, on the other hand, goes to battle with Dukas' Byzantine army.

After Osman lures Togay from custody into a trap, he captures and beheads him in Söğüt. The abduction and execution of Togay angers the Governor Yargucu, who subsequently demands Kayı Tribe pay a three-year tax within three days. Yargucu also forms an alliance with Nikola. Later, Malhun Hatun reveals to Osman that she is pregnant and Göktuğ's lover Zoe is revealed to be serving Nikola.

A wedding ceremony is set up in Kayı Tribe for the marriage of Osman Bey and Malhun Hatun. While the wedding is being held, Bala Hatun grieves despite her consent to this marriage. With the arrival of the winter season, after the wedding ceremony, it is decided that Kayı tribe will migrate to Domaniç Plateau. While preparations continue in the tribe, Togay breaks the agreement and decides to attack Osman Bey, despite the warnings of the Mongol governor Yargucu. In the ensuing battle, Togay kills Bamsı Beyrek after a fight.

Tensions rise as Mongolian Commander Nayman demands a ransom for Samagar's murder. Ismihan Sultan summons Germiyanoglu, Candaroglu, Karesioglu, and Osman Bey. The Beys hold Osman Bey responsible and insist he pay the ransom. However, Osman Bey stands firm, refusing to negotiate. He asserts their equality and rejects paying any price for Samagar's head. Meanwhile, Olof gathers a large Byzantine army, posing a threat to Inegol. Osman Bey faces challenges from both the Mongols and Olof, endangering his principality.

After Sheikh Edebalı intervenes and prevented a possible conflict between Osman Bey and Umur Bey, Umur Bey stands down. Meanwhile, Nikola takes action to destroy the truce between Osman Bey and Togay, with Osman's plan to trap Togay being ruined. While Osman Bey, sends Göktuğ as an envoy to Togay to ensure he remains loyal to the agreement; Sheikh Edebali takes on the task of persuading Umur Bey about marriage. Osman Bey, on the other hand, explains to Bala Hatun that he decided to marry Malhun Hatun after consulting with Sheikh Edebali.

Nayman falls into an unexpected trap set by Osman Bey while searching for lost gold. Osman Bey remains determined despite internal and external challenges, continuing his conquests from where he left off. His next target is Inegol, requiring collaboration with Ismihan Sultan. Osman Bey's approach to persuading Ismihan Sultan remains uncertain. As they near Inegol's walls, Nayman becomes fixated on seizing Osman Bey's prized possession. Undeterred, Osman Bey persists in his quest to conquer Inegol. Oktem Bey supports him, and the Hatuns plan to eliminate Frigg.

Nayman locates his lost gold but falls into an unexpected trap. Osman Bey remains resolute in his conquests despite internal and external challenges. He sets his sights on Inegol and aims to collaborate with Ismihan Sultan. The method to win her support is uncertain. As Osman Bey approaches Inegol, Nayman seeks a valuable asset. Undeterred, Osman Bey persists in his conquest, while the Hatuns plan to eliminate Frigg.

Osman steals all the tax gold that was being transported illegally to Alişar Bey, the Selçuk Sançak Bey, by the Mongols. Yannis, disguised as a clairvoyant, proves to Alişar that Osman stole the gold. Alişar becomes an enemy of Osman.

Osman Bey plans to break the Ilkhanate and Crusader alliance. During an attack on Gonca Hatun's caravan, Alaeddin Bey helps her, echoing their past cooperation. Osman Bey discusses Orhan and Elçim's marriage, aiming for a quick resolution, causing reactions from Orhan and Holofira. İmren Tegin plots to kill Elçim to disrupt the marriage, ordering his spy to act. İmren Tegin also kills Uraz Bey, sending his head to Osman Bey as a grim message. Osman Bey's response to İmren Tegin's provocations is awaited.

Osman Bey prepares his army for his ambitious goal, setting a new plan into motion. Elçim Hatun's anger towards Holofira persists, creating tension with Orhan Bey. Mehmet Bey's news from Kütahya causes a problem for Gonca and Alaeddin. Alaeddin proposes marriage to Gonca, awaiting her response. Malhun Hatun, determined to uncover the truth, imprisons Olivia in the dungeon. Orhan Bey plans a significant attack on Olcaytu's caravan, setting a trap. Finally, Osman Bey faces Imren Tegin, setting the stage for a crucial confrontation.

Spring brings victories, as Ramadan and Nevruz coincide. Osman Bey decides to spend Ramadan with his tribe, anticipating what awaits them. Bala Hatun supports Holofira, whose mysterious survival after being poisoned raises questions about her future with Orhan. Alaeddin and Gonca ride together, facing obstacles they must overcome. Osman Bey sets a trap for the Catalan army, seeking their numbers and routes. He plans to use this information strategically. Imren Tegin awaits the Franks, plotting against Osman Bey. Determined, Osman Bey aims to defeat the Frank leader and thwart Imren Tegin's schemes.

The fight between Boran and Konur causes a stir in the tribe, awaiting Osman Bey's decision. Olivia sees this as advantageous and plans to exploit it. Imren Tegin demands Osman Bey's allegiance, but Osman asserts his superiority, leading to rising tensions. Osman has a plan against Imren Tegin, who is also strategizing against him. Ayça Hatun tries to burn Elçim Hatun's dowry, endangering Gazi in the fire. The tribe must determine if Ayça was responsible. Bala Hatun sets out to support Osman Bey against Imren Tegin's move. Holofira arrives at Osman Bey's camp, and Orhan sees her, prompting a conversation. Alaeddin Bey remains committed to Gonca Hatun, despite their challenges.

Osman Bey escapes execution at the last moment, but the Kayı tribe faces a life-or-death struggle due to the Mongol-Byzantine alliance and Ilbay's betrayal. Ulugan announces Ilbay Bey as the new lord of the Kayıs, leaving Osman Bey enraged and vowing revenge. Ulugan decides to execute Osman Bey in front of the Kayı tribe but changes his mind and takes him on a dangerous journey instead. Osman Bey escapes with Poena, who reminds him of Halime. Bala Hatun, Orhan, and Alaeddin plan to save Osman Bey but fall into a trap set by Sofia, Lucas, and the nokers. Osman Bey, Bala Hatun, and Poena are trapped on the edge of a cliff, where Poena takes a big hit during their fight with Lucas and the nokers.

Osman Bey aims to reclaim Söğüt from Ulugan, restoring hope among his people and setting an unexpected trap for his foe. Meanwhile, Cerkutay and his son Gazi are captured, leaving their fate uncertain and causing distress for Ülgen. Sofia escalates tensions by capturing Bala Hatun, leading to a confrontation with Begüm Hatun, who sets fire to Bala's hut. Osman Bey rescues Bala but is consumed by a deep desire for revenge after witnessing her dire condition.

Osman Bey is devastated by the treacherous martyrdom of Bala Hatun and vows to live only for her revenge. He learns that Begüm Hatun burned the hut and sets out to find Begüm and İlbay. Bala Hatun's martyrdom deeply affects the Kayı people and her children, Alaeddin, Fatma, and Orhan. Osman Bey stops Bala Hatun's burial preparations in Söğüt, deciding she will be buried in the Kayı tribe next to her child Halime. As Osman Bey prepares to take back the tribe, he mobilizes all resources against the numerically superior Ulugans and İlbay. Great dangers await Osman Bey and his army as they strive to reclaim the Kayı tribe and seek justice for Bala Hatun. Meanwhile, Poena, who witnesses these events, is struggling to remember her past and is confused as she gets to know the Kayı people.

Sofia continues to torment Bala Hatun in captivity, while Halime, having overheard Sofia's conversation, confronts her. Bala Hatun, now certain her daughter is alive, plans her escape to reunite with her. Osman Bey, lacking proof of Bala's survival, learns from Halime/Poena that she is alive. Determined, Osman sets out to rescue Bala, but Sofia moves her to a hidden monastery, posing yet another obstacle as Osman fights to reunite with Bala and their daughter.

In the Kayı tribe, joy returns with the reunion of Bala Hatun and the arrival of Ramadan, even as Osman Bey and his people face the growing threat of Ulugan and Ilbay, who conspire to weaken his power by turning other beys against him. Amidst the joy, Bala Hatun focuses on capturing her enemy Sofia, ultimately bringing her to the camp. Meanwhile, Osman Bey faces a bloody struggle against Ulugan, who, with external military support, corners him and endangers his loyal alps, leaving the tribe to fight against treachery and ambition while holding onto their unity and faith.

Osman, with many difficulties, manages to escape the town with his alps. Balgay meets Yannis and Sofia and they decide to ally against Osman. Balgay even raids the Kayı tribe and has Osman's entire family in hostage until he comes. Konur, one of Osman's alps, also uncovers the fact that one of Balgay's men, Kongar, is his long-lost brother.

Balgay, a Mongol commander, captures Söğüt and kills many women and children. He offers Osman that he will give him the Sançak Beylik and some more land if he was to become loyal to him. Osman rejects Balgay's offer.

Bala Hatun is kidnapped. Osman is imprisoned in a tent with his hands chained. Learning about Bala Hatun's abduction and outraged Osman's actions surprise everyone.

After he kidnaps Sofia, Osman tells Yannis that he can have his daughter back if he asked Balgay to come to his castle, in the way he would ambush him. The ambush is successful but Batur is killed by Alişar, who has the intention of making Dündar and Osman fight.

Oktem Bey's death brings grief to Yenisehir, but Osman Bey remains resolute. Nayman unexpectedly offers Osman Bey a role as his commander, shocking Ismihan Sultan. Ismihan doubts Osman Bey will accept the offer, while Nayman remains confident. Bengi Hatun is disappointed and disturbed by the possibility of Osman Bey's acceptance and confronts him. Nayman confronts Ismihan Sultan for her actions, but she defends herself by claiming loyalty to Osman Bey. Nayman plans to kidnap Turkmen children to strengthen his control, causing concern for Malhun Hatun and Bala Hatun.

Arslan tasks Cerkutay, who is alive, to go to Geyhatu, who already hates him because of him being loyal to Balgay, and tell him that Osman captured Möngke. Geyhatu, who is in Konya planning to kill his brother, Argun, is angered over this and allows Cerkutay to live if he is loyal to him. Meanwhile, Söğüt perishes due to the disease spread by Flatyos on the orders of Nikola followed by an explosion done by the same people.

Osman Bey thwarts Kantakouzenos' plans in Constantinople, but the cunning strategist persists in his game. Kantakouzenos initiates a new strategy, enlisting Olof's aid as the first step. Olof, driven by revenge for his brother Saga, arrives in Yenişehir with his men at Kantakouzenos' behest. Their goal is to besiege Osman Bey, plotting to attack him from both external and internal fronts.

Nayman proposes a one-on-one fight to Osman Bey, with high stakes for victory or defeat. As Osman Bey prepares for the battle, he entrusts his vision to Bala Hatun. Meanwhile, news arrives that Aktemur Bey has taken leadership of the Kargın tribe. Nayman expresses confidence in ruling the frontiers, challenging Osman Bey's fate. The Alps intensively prepare for the battle against Nayman. Ismihan Sultan sees an opportunity to benefit from the conflict between Osman Bey and Nayman.

Despite challenges from Ismihan Sultan and Nayman, Osman Bey persists in his conquests with a clear goal. He prepares extensively for the conquest of Köprühisar. However, a devastating surprise awaits as Ismihan Sultan collaborates with Nayman to destroy Osman Bey. Ismihan assigns Bayındır Bey to assassinate Osman Bey in his mansion, while Bengi Hatun supports Ismihan Sultan. Nayman attacks Osman Bey's war headquarters, and the mansion is engulfed in flames.

As Osman Bey continues to pursue his goal of establishing a state, he finds himself facing formidable adversaries. He not only grapples with enemies disguised as friends within his own ranks but also engages in a battle against the Byzantine Empire on the outside. Osman Bey has set his sights on a specific objective: the conquest of the Marmara Fortress, a crucial step towards gaining control over Bursa and Iznik, and further advancing his ambitions.

Osman Bey gathers his people to save Gündüz Bey and plans a strategic move against İmren Tegin. He also acts to save Uç Pazar, raising the Germiyan flag there again, which could impact Germiyan-Kayı relations positively. Osman Bey asks Alaeddin Bey to make a sacrifice for their principality's future, similar to what Orhan has done. Meanwhile, Holofira returns to the tribe after a final farewell, causing potential revelations for Orhan. As İmren Tegin plots against Osman Bey, Osman focuses on conquering Atranos Castle and has captured İmren Tegin, deciding on his fate.

Osman Bey, determined to save his son, devises a plan to end discord, confronting Ulcay directly. Ahmet's death causes tension in the Kayı tribe, with Osman Bey detaining İbrahim Bey and Yakup Bey to prevent further bloodshed. Melike Hatun and İbrahim Bey, angry over their son's death, vow revenge. Meanwhile, Osman Bey and Bala Hatun marry Alaeddin and Gonca, despite their fugitive status. Orhan and Mehmet clash fiercely as Mehmet seeks Alaeddin and Gonca. On another front, Mehmet allies with Ulcay to free Yakup Bey, plotting to overcome the danger posed by Ulcay. Osman Bey faces potential threats while visiting Ahmet's grave.

Osman Bey confronts Yakup Bey and İbrahim Bey over the murder of the judge to save Alaeddin. Tensions rise, but Yunus Emre's arrival impacts the hostility. Bala Hatun investigates Ahmet's murder in Uç Pazar, where a witness mentions seeing Ulcay. Ulcay's reaction is awaited. Elçim Hatun and Holofira discuss Holofira's decision to stay in the camp, prompting Elçim's response. While Bala Hatun manages tribe affairs, Osman Bey's absence raises questions as he heads to Bursa. Yakup Bey and İbrahim Bey plot to take Bursa and İznik, aiming to neutralize Osman Bey. Osman Bey's goal in Bursa is uncertain, challenging Yakup Bey and İbrahim Bey's plans. The conflict between the three principalities evolves amidst these tensions.

Osman Bey is determined to capture Mekece Castle, despite opposition from Yakup Bey and İbrahim Bey, who have allied with the Tekfur. Gonca Hatun struggles with the war between Germiyan and Kayı, torn between her love and her ancestral home. Melike Hatun visits Bala Hatun, claiming to unite against enemies, but Bala tests her sincerity due to past agreements with the Tekfurs. Orhan Bey heads to Ulcay's lair, aiming to capture him. Yakup Bey and İbrahim Bey attempt to sway Gündüz Bey to isolate Osman Bey, using a secret advantage. Osman Bey prepares his strategy, ready to confront the two great beys and secure his objectives.

Osman Bey faces Commander Constantine, with the survival of Byzantium or the Turkish state at stake. Osman Bey is determined to fight without stopping and makes his first move against Constantine. Mehmet worries about Gonca Hatun's illness, which might thaw their strained relationship. Constantine receives a letter revealing Holofira works for Osman Bey, leading to potential actions against her. A trick is being set up against Elçim Hatun involving Holofira's exposure. Bala Hatun's response will be crucial. Constantine plans to defeat Osman Bey, who must find a way to escape the trap set by Constantine.

Osman Bey rallies to reclaim his losses and confronts his enemies, with Yusuf and his alps joining his cause. While Bala Hatun and her allies support him, Begüm Hatun, driven by revenge, opposes Bala. Yusuf and the alps are captured by Lucas, who plans Yusuf's execution in the arena to weaken Osman Bey's resolve. Osman Bey acts swiftly to rescue them, facing peril as he confronts Lucas, Sofia, and Ulugan in the arena to defend his people and thwart their plans.

Batur, Dündar's son, rescues Osman for a reputation in the tribe after one of Salvador's men is tricked. Edebali declines Osman's proposal leaving him devastated and upset.

Tekfur Alexis of İnegöl seeks revenge on the Kayı tribe for conquering Kulucahisar. He invades a caravan of the Kayı tribe, Osman, takes his revenge by defeating him in a battle. After the battle, the Emperor, concerned over the Turk threat on his empire, sends Aya Nikola to İnegöl Castle. Nikola kills Alexis for his failure and snatches the castle from him. Nikola also frees an old friend from prison, Flatyos. Ertuğrul also later returns towards the end after a year in Konya.

Osman Bey establishes his headquarters in Yenişehir, acting on crucial information from his spy in Constantinople. He faces threats from Northern warriors Olof and Frigg. Bala Hatun and Malhun Hatun prepare for a market in Yenişehir, leading to tensions between Bengi Hatun and Malhun Hatun. The competition between Aktemur and Alçiçek adds to the growing tension.

Osman Bey is ambushed by Olof, revealing a larger scheme involving the kidnapping of his sons and false accusations against Öktem Bey. Ofelia is suspected as the prime culprit. Emperor Andronikos orders Olof to kill Osman Bey and his daughter, Ophelia, escalating the danger for the family.

Ismihan Sultan captures Sheikh Edebali and uses him as bait to trap Bala Hatun in Marmaracik Fortress. Osman Bey confronts Olof and Ismihan Sultan when he attempts to rescue them. Ismihan Sultan is determined to achieve her goals and demands the presence of Sultan Mesud to spare their lives. In the meantime, a contagious disease spreads in Sogut, causing concern. Malhun Hatun and Kumral Abdal face unexpected danger while searching for a cure. Finding an antidote becomes crucial to save the city from destruction.

Karacelasun seeks vengeance for his brother and meets Master Gera, considering an alliance. Orhan Bey and Holofira's love grows, but Malhun Hatun upsets Holofira. Alaeddin Bey and Gonca Hatun clash, and Karacelasun raids the Uch Bazaar, angering Mehmet Bey who blames Osman Bey. Osman Bey, aware of danger, remains steadfast. Yakup Bey and the Turkmen Beys meet, refusing to let the Mongols or Byzantines prevail. Osman Bey knows the Mongols and Turkmen Beys are after him and Yakup Bey. Yakup Bey’s life is in danger. Osman Bey and his alps face traps trying to save Yakup Bey from Karacelasun's ambush. The outcome remains uncertain.

Osman Bey rescues Yakup Bey from Karacelasun, emphasizing his commitment to Islam. Karacelasun seeks revenge with a new plan against Osman Bey, who assigns Orhan Bey to thwart him. Gonca Hatun's condition worsens, prompting Alaeddin and Mehmet to search for a cure. They encounter Crusader soldiers, and Yakup Bey, aware of Gonca's condition, vows to hold the Mongols and the Kayı accountable if she suffers. Alaeddin Bey struggles to find a cure for the poisoned victims in Uç Pazar, growing increasingly desperate. Cerkutay, in anguish, holds his poisoned child, with Ülgen Hatun also deeply affected. Yakup Bey manipulates Cerkutay against Osman Bey, blaming him for their misfortunes. Vasilis, revealed as a traitor, takes refuge with Yakup Bey, accusing Osman Bey of deceit. Yakup Bey, enraged, plans to hold Osman Bey accountable, escalating the tension between them.

Taceddin Noyan aims to make Osman Bey submit, but Osman plans a counter-move. Taceddin Noyan meets Mehmet Bey in Uç Pazar, and Gonca Hatun, aware of this, informs Alaeddin Bey before being shot. Byzantine Executioner Imren Tegin arrives in Uclar to join forces with Taceddin Noyan. Osman Bey, having captured Karacelasun, confronts Taceddin Noyan to intimidate him, with the outcome of their encounter pending.

Seeing Helen and Sofia running down the aisle, Kalanoz went after her, suspecting her murder partner, Sofia, of getting involved in other things. Osman captured Teokles and the front of Theebali was blocked by Akca Dervis, Pehlivan and Zulfikar Dervis. After the trio, Bala Hatun took Osman to Edebali. I wonder what Edebali will tell Osman. What kind of plan will Dundar and Batur plan to plan for Dundar, whose daughter was kidnapped, and Zohre, who saw Osman as responsible for these events? What's the big surprise waiting for Kalanoz, who's going after Sofia and Helen.

Yannis succeeded in realizing his bloody plan, raiding the market by the lake and kidnapping Edebali's daughter.

Osman began his journey by forming a friendship with Yorgopolos and the Kayi tribe expanded its influence further during the reign of Osman Ghazi, but some problems will hinder Osman and he must solve it.

The appearance of Adbali and his daughter, Bamsi bid farewell to his son Ibars, while sedition began to appear in the horizon between the Kayi tribe and the castle after the killing of Yorgopolos and Sofia accused Osman of killing him.

The martyrdom of Oktem Bey brings sadness to Yenisehir. Nayman surprises Osman Bey with an offer, wanting him to become his commander. Ismihan Sultan believes Osman Bey will reject the proposal, but Nayman remains confident. Bengi Hatun confronts Osman Bey and tries to persuade him with Nayman's offer, becoming disheartened by his hesitation. Nayman questions Ismihan Sultan's loyalty, prompting her to maintain appearances of loyalty to Osman Bey. Nayman plans to kidnap Turkmen children and turn them into nokers, alarming Malhun Hatun and Bala Hatun.

Osman Bey takes action to catch Constantine off guard, ultimately confronting him. The end prepared for Constantine is significant. Mehmet Bey's involvement in the plot against Elçim Hatun leads to a showdown with Alaeddin. This marks a critical impasse for the two principalities. Orhan Bey, concerned for Holofira's safety in Bursa, seeks to take her away. Her response to Orhan's request is pivotal. Following Osman Bey's victory over Constantine, Alaeddin and Gonca's wedding takes place amidst celebrations, and Osman sends letters to all principalities. Osman Bey aims to unite all Turks under one flag, inviting the principalities to join him in establishing a state. The response of these principalities will shape the future of their unified cause.