Stardate: Unknown. Sisko leads, what he hopes will be, a final all-out assault on Cardassia Prime. Kira and Garak mount a suicidal assault on the Cardassian headquarters occupied by the Dominion, who in turn kill innocent women and children village by village in retaliation for the Resistance's attacks.

Stardate: 52902.0. As the war careens toward a final showdown on Cardassia, Sisko's definitive action as the Emissary draws near.

Stardate: 49011.4. When the Klingons bring a task force to DS9, Captain Sisko sends for Starfleet's lone Klingon officer, Worf, to uncover the mysterious intentions of their presence.

Stardate: Unknown. The Federation's only hope of stopping massive Dominion reinforcements from entering the Alpha Quadrant relies on Sisko's suicide mission to reach DS9 before the minefield is destroyed.

Stardate: 50564.2. The station readies for a Dominion attack. Worf and Garak meet some unexpected friends in a Dominion Prison camp.

Stardate: Unknown. Now rejoined with his former mentor, Garak is ordered to interrogate Odo about the secrets of his people, while the joined Romulan/Cardassian attack fleet moves towards the Founders' home world on a mission of destruction.

Stardate: Unknown. The Federation and Bajoran people of DS9 fall into conflict when a Bajoran religious extremist comes to the station and challenges the secular teachings of Keiko O'Brien's school.

Stardate: Unknown. Melanie, an aspiring writer, wants to know why Jake Sisko stopped writing at 40. Jake tells how his father died in an accident and then suddenly reappeared.

Stardate: 49962.4. Odo is suddenly struck by illness. He is barely able to hold shape. Bashir and Odo see no other alternative then going to the Founders. Garak wants to come along.

Stardate: Unknown. As tensions mount within Kira and Damar's resistance cell, Worf realizes he must take action to prevent Gowron from making a key strategic mistake.

Stardate: Unknown. Sisko and Quark and a strange telepathic woman are arrested by Jem'Hadar, soldiers of the Dominion.

Stardate: Unknown. A coded message from the Gamma Quadrant leads Garak to believe his mentor, Enabran Tain, is still alive. He and Worf seek him out, only to discover something much worse: a Dominion invasion fleet poised to attack the Alpha Quadrant.

Stardate: Unknown. As the war between the Federation and the Dominion continues, Sisko and his crew are reassigned from the Defiant, while Kira and Odo cope with the bureaucracy of the station's occupation.

Stardate: 48213.1. Odo has found his home and is introduced. Meanwhile Sisko finds out peace talks between the Dominion and the Federation have already started.

Stardate: Unknown. On the eve of Dukat successfully disabling the minefield, Sisko coordinates a massive assault to retake Deep Space Nine.

Stardate: 48959.1. The Defiant is off to show the Federation's presence to the new Tzenkethi government. While underway the ship malfunctions and Bashir is suspected of sabotage.

Stardate: Unknown. Sisko's crew is diverted to the front lines, where, alongside war-torn Starfleet officers, they must make a stand against a Jem'Hadar assault.

Stardate: 48481.2. Sisko is forced to take the place of a key historical figure on Earth in 2024 in order to preserve the timeline.

Stardate: Unknown. As Winn begins studying her uncertain role in following the path of the Pah-wraiths, the Federation engages in battle for the first time against the Dominion and their new Breen allies.

Stardate: Unknown. After an attempt is made on Garak's life, Odo conducts the investigation on who tried to murder the Cardassian tailor - and why.

Stardate: Unknown. Quark and Rom take Nog to Earth and Starfleet Academy, but a malfunction with the ship takes the crew back in time, to Roswell New Mexico in 1947.

Stardate: Unknown. When Starfleet institutes martial law to combat the Changeling Menace, Sisko begins to question if the Dominion is the real threat.

Stardate: 49170.65. Sisko travels to Earth when a bombing at a Federation conference is determined to be the work of Changelings.

Stardate: Unknown. With the war between Klingons and Federation intensifying, Sisko must make a plan to expose Gowron as a changeling. Odo is still having trouble with becoming a solid.

Stardate: Unknown. Quark tries to boost his reputation by taking credit for the accidental death of a Klingon in his bar, but lands himself in the middle of a Klingon political struggle.

Stardate: Unknown. Dr. Bashir fights to save Garak's life when a malfunctioning Cardassian brain implant threatens to kill him.

Stardate: Unknown. While a Romulan delegation tries to get information about the Dominion, O'Brien gets visions of unpleasant things that are about to happen in the future.

Stardate: Unknown. As Kira leads a mission to help organize Damar's resistance forces, Bashir learns that Odo has been infected with the disease sweeping through the Great Link.

Stardate: 48213.1. Instead of waiting for the Jem'Hadar to attack, Sisko wants to try a different approach. He wants to take a new class starship to try to find the Founders.

Stardate: Unknown. Captain Sisko has a full sensory vision of himself as an under-appreciated science fiction magazine writer in 1950s America.

Stardate: Unknown. Sisko and his crew are marooned on a barren planet with a squadron of Jem'Hadar soldiers and their wounded Vorta overseer. But when the Vorta seeks out Sisko to make a deal, can he be trusted? And should Sisko accept the treacherous proposal?

Stardate: Unknown. The discovery of an infant Changeling gives Odo a chance to put right the trauma of his own upbringing, while his “father” Dr. Mora insists on a more clinical approach.

Stardate: Unknown. When the mysterious Sloan attempts to recruit Bashir for an undercover mission on Romulus, Sisko orders Bashir to go along with the plan, in hopes of learning more about Section 31.

Stardate: Unknown. When Sisko is picked to head up an attack on the Cardassian homeworld, the Prophets appear to him in a vision, warning him of impending doom if he leaves the station.

Stardate: 47581.2. Chief O'Brien's world is turned upside down when for no reason whatsoever he is being ignored by his family and friends and is being closed out of every essential job on the station.

Stardate: Unknown. Mentally and emotionally scarred by his combat injuries, Nog seeks comfort in the holographic fantasy world of Vic Fontaine.

Stardate: Unknown. Kira finds herself on Cardassia as a Cardassian. She is told she is called Iliana Ghemor and was a Cardassian spy.

Stardate: Unknown. O'Brien tries to re-integrate to life on the station after serving 20 years in a virtual prison.

Stardate: 52861.3. With the Cardassian resistance movement crushed, Kira, Damar, and Garak find themselves trapped behind enemy lines. Meanwhile, Grand Nagus Zek announces his retirement and plans to name Quark his successor.

Stardate: 48467.3. The DS9 crew welcomes a visit from William Riker of the Enterprise, but the lieutenant’s hidden agenda leads to a tense standoff deep in Cardassian space.

Stardate: 48481.2. Sisko, Bashir and Dax are accidentally sent to San Francisco in the 21st century due to a transporter malfunction, and must figure out how to get back without changing the time line.

Stardate: 52645.7. Bashir and O'Brien capture Sloan and probe his mind in a search for the cure to Odo's disease.

Stardate: Unknown. The station goes into lockdown and the crew is endangered when an old Cardassian security program is accidentally activated.

Stardate: Unknown. Dr. Bashir's plans to attend a medical conference at a breezy resort are canceled when Starfleet Intelligence boards DS9, suspecting the doctor of treason.

Stardate: 50814.2. The DS9 crew discovers a colony that, due to a time travel accident, turns out to be inhabited by the crew's own descendants.

Stardate: Unknown. When Quark and Rom's mother is abducted by the Dominion, the two brothers recruit an all-Ferengi team to embark on a dangerous mission to get her back.

Stardate: Unknown. While Worf helps Quark to pursue his former wife Grilka, O'Brien and Kira grow uncomfortably close to each other.

Stardate: 46379.1. Commander Benjamin Sisko and a new crew of Starfleet and Bajoran officers take command of an abandoned Cardassian space station and make an incredible discovery that will change the galaxy and Sisko's future. A new crew is assigned to a former Cardassian space station: Deep Space Nine. It is a joint Federation/Bajoran force, with Commander Sisko in charge, but his life is dramatically changed when he is declared the Emissary to the Prophets by a Bajoran priest.

Stardate: 47282.5. Odo relives some terrible and tragic memories of a past investigation when he was the constable on Cardassian-occupied Deep Space Nine, then named Terok Nor.

Stardate: Unknown. Grand Nagus Zek, the leader of Ferengi society, comes to DS9 to oversee the introduction of a Ferengi business presence in the Gamma Quadrant and announce Quark as his successor.

Stardate: Unknown. While vacationing on Risa, Worf and Dax meet a group of fundamentalist protesters who claim that the Federation has gone soft.

Stardate: Unknown. A mysterious woman approaches Jake about his future as a writer. Odo promises to do whatever it takes to help Lwaxana Troi keep her baby over the father's wishes - even if it means marrying her himself.

Stardate: Unknown. The Grand Nagus goes missing in the mirror universe, leading Quark and Rom on a mission to track him down.

Stardate: 47329.4. While noted scientist Gideon Seyetik is preparing for an ambitious project, re-igniting a star, Sisko is intrigued by a woman who keeps disappearing.

Stardate: Unknown. The Chief's daughter gets caught in a time displacement and when they get her back, she is considerably older.

Stardate: 46844.3. Kira finds herself in a difficult moral situation when her job demands she force an adamant Bajoran man from his home in the name of progress.

Stardate: Unknown. As Lwaxanna Troi visits the station for a Bajoran festival, the crew is stricken with intense romantic attractions to one another.

The Wadi from the Gamma Quadrant are to make first contact and decide to visit DS9. When they catch Quark cheating they let him off by playing a special game.

Stardate: 48498.4. Dr. Bashir must use extraordinary measures to prolong Vedek Bareil's life long enough to allow Bareil to complete sensitive peace negotiations between the Bajorans and the Cardassians.

Stardate: Unknown. Kira is kidnapped by a Bajoran Pah-wraith cult led by Dukat.

Stardate: Unknown. A search for O'Brien, who has gone missing somewhere near Ezri's home world, reunites Ezri with her family and their troubles.

Stardate: Unknown. After being attacked in the infirmary, Dr. Bashir has a dual mystery on his hands: what has happened to the station while he was out and why is he aging so rapidly now?

Stardate: 47573.1. Sisko and Chief O'Brien discover a colony that lives without technology.

Stardate: Unknown. Quark meets his match when a new rival opens a casino opposite Quark's Bar on the Promenade; meanwhile the station is suffering issues of high improbability.

Stardate: 47391.2. A race that has been conquered twice over, one of the conquerors being the mysterious Dominion, comes to the station seeking aid and a new home.

Stardate: 47229.1. A new arrival to the station with a special gravity-based disability appeals to Bashir's heart; meanwhile an old associate of Quark's comes to the station to kill the barkeep.

Stardate: Unknown. Bashir begins falling in love with a genetically engineered patient whom he helped bring out of her state of introversion.

Stardate: Unknown. After receiving some disturbing information from Gul Dukat, Major Kira seeks Sisko's approval as Emissary to travel back in time to find out the truth about her mother. Meanwhile, Chief O'Brien and Dr. Bashir discuss a holosuite program surrounding the Battle of the Alamo.

Stardate: Unknown. A Trill named Arjin comes to DS9 to learn what it is to be a Trill with a symbiont but finds his teacher, Dax, to be less than he expected.

Stardate: 46729.1. When O'Brien and Bashir beam down to a Bajoran village, the community selects O'Brien as their next Sirah - expecting him to save them from a menacing entity.

Stardate: Unknown. A murder investigation prompts Ezri to confront the repressed memories of Joran, a former Dax host who had killed three people.

Stardate: 46925.1. Odo and Lwaxanna Troi come to a mutual understanding when a computer malfunction causes them to become trapped in a turbolift.

Odo helps a woman hiding on the station from organized criminals, but quickly develops a personal interest in the case.

Stardate: Unknown. The Trill homeworld is the setting, as Sisko and Bashir take Jadzia home for treatment when she begins experiencing hallucinations after playing a tune she can't recall.

Stardate: 46853.2. The DS9 crew's own imaginations cause mysterious beings with unknown intentions to appear on the station.

Stardate: Unknown. Vedek Bareil is accused of having betrayed his people to the Cardassians during the occupation, and Major Kira is desperate to prove his innocence.

A Cardassian suffering from Kalla-Nohra, a disease that indicates he served in a labor camp, visits DS9. Kira is determined to convict him as a war criminal.

Stardate: 50416.2. A mysterious assassin begins wiping out all the members of Kira's old resistance cell.

Stardate: Unknown. News arrives that Kai Winn has also become Bajor's political leader. She asks Kira to negotiate with an old resistance friend about returning soil reclamators.

Stardate: 46910.1. Jadzia Dax is charged with a murder that her symbiont's previous host Curzon allegedly committed. Now an extradition hearing may decide whether Jadzia can be held responsible for the actions of a previous life.

Stardate: Unknown. Worf, Dax and the Klingon Dahar master Kor set out to find an ancient lost relic: the Sword of Kahless.

Stardate: Unknown. Quark doesn't know whether to be panicked or overjoyed when he learns that his mother is the new lover of the Grand Nagus.

Stardate: Unknown. A wanted man from the Gamma Quadrant with questionable motives reveals to Odo stories about other "Changelings," which may hold clues to Odo's mysterious origin.

Stardate: 51474.2. A shapeshifter, one of "the hundred" sent from the Link centuries ago to explore the galaxy, tries to convince Odo to abandon his life as a humanoid in favor of a grander quest.

Stardate: 50712.2. When a Cardassian official that thinks of Kira as his daughter is dying, he agrees to reveal all he knows to her. But the experience dredges up Kira's memories of her own father's death.

Stardate: Unknown. Sisko, Kira, and Bashir take Kai Opaka through the wormhole for a brief excursion in the Gamma Quadrant. But when they crash-land on a desolate planet, they find a divided, warring penal colony where no one ever dies.

Stardate: Unknown. A Cardassian woman, who was once a former flame of Quark's, visits the station under dubious circumstances.

Stardate: Unknown. Worf and his son Alexander must come to terms with one another when Alexander is assigned to the Rotarran and voices his intentions to become a warrior. Meanwhile, Kira finds herself between friend and foe when Ziyal returns to the station and reconciles with her father.

Stardate: 47391.7. Odo and Dr. Mora Pol, Odo's 'father', discover a life form similar to Odo on a Gamma Quadrant planet.

Stardate: 46423.7. A deadly virus created by the Bajorans 18 years earlier inadvertently breaks loose aboard the station, and prompts a race against the clock to find a cure.

Stardate: 46421.5. When the return of a man Odo sent to prison years earlier leads to his murder aboard the station, Odo becomes the prime suspect and a target for harassment.

Stardate: Unknown. When the Mirror Universe counterpart of Sisko's deceased wife lures Jake to the other side, Sisko must follow and help the human resistance against the Alliance's forces.

Stardate: Unknown. Odo tries to bond with an alien child Quark finds in a load of salvage, while Sisko tries to break his son's relationship with a 20 year old Dabo girl.

Stardate: 49195.5. Lenara Kahn, the new host of the wife of Dax's former host Torias, comes to the station. While they're not allowed to renew their relation, there's still a spark.

Stardate: 47182.1. A jealous Trill, who had waited his entire life to receive a symbiont but never had, decides to steal one. . . Dax's!

Stardate: 51825.4. Jake and Nog's runabout comes under attack from the Jem'Hadar. They are rescued by the Valiant, a ship manned by Red Squad, a elite group of young Starfleet cadets.

Stardate: Unknown. Quark must wrestle with his conscience when he becomes involved with arms merchants.

Stardate: Unknown. Chief O'Brien goes undercover to infiltrate an Orion crime ring.