Police officers Sophia Rühlemann and Sebastian Fuchs from Hamburg-Hamm are chasing a burglar who is believed to be hiding somewhere inside a vast office complex. A reckless escape attempt suddenly puts the officers in a dangerous and challenging situation. At the same time, the criminal investigation unit is on its way to a mysterious death. A young man has collapsed and died unexpectedly in the middle of the street. Investigators Katrin Kernig and Michael Walther begin searching for answers, trying to piece together what really happened.

In Mainz’s lively nightlife district, officers are called to de‑escalate a weekend brawl. Elsewhere, highway patrol conducts routine safety checks and uncovers vehicles driving without lights. Police teams simultaneously manage multiple disorderly calls citywide, including allegations of harassment and racially abusive behaviour, showing how quickly routine patrols can intensify.

Criminal investigators are called to an apartment where a middle‑aged man is found dead in puzzling circumstances, triggering a thorough forensic inquiry including a medical examiner’s involvement. Meanwhile, other patrols deal with unrelated incidents such as a fire initially thought to be arson, which turns out to involve domestic conflict.

Officers handle several unusual night calls: a supposed break‑in at a club turns out to involve a drunken couple trying to sneak in, and another team uncovers an odd case of water theft from the city supply. At a riverside wine festival, drunken behaviour complicates a property damage call, and a report of a colleague in a possible psychological crisis demands calm judgement from responding officers.

Mainz police respond to an armed robbery at a petrol station where the attendant was threatened and traumatized. The criminal investigation team and other patrol units launch an extensive search for the suspect, while other officers investigate related incidents such as suspicious behaviour during traffic stops.

A brothel client claims he has been cheated by a sex worker. Altona police officers Marlene Ebert and Kenneth Tamm attempt to confront the woman with the allegations. Meanwhile, Sophia Rühlemann and Sebastian Fuchs respond to a report of domestic violence. A woman is being threatened by her partner. Will the officers find the man still at the scene?

Teams deal with challenging calls in the rain‑soaked streets of Mainz, including securing a scene after a frontal collision and calming bystanders whose intoxication complicates traffic control. Officers also handle a sensitive domestic violence situation at a community festival and other everyday offences like intercepting reckless driving and responding to petty theft.

A violent incident at a petrol station in Bergedorf prompts a search for a suspect at night, highlighting how officers coordinate and respond under low‑visibility conditions. Meanwhile, another unit from the water police is called to investigate a possible contamination incident in the port — adding complexity to the night’s workload.

Commissioners Neuhaus and Gillot are supposed to investigate two deaths. A man suddenly dies at home and a young man dies from his crossbow. Foreign influence? This death is very close to the detectives' minds.

The KDD is called to a break-in in downtown Mainz. The victim is missing a weapon. He knows the alleged perpetrator and suspects that he is planning further attacks. Meanwhile, in the city center, a motorcycle gang is making the streets unsafe, and the Old Town Guard is in pursuit.

A restless night for the KDD: First the investigative team is called to an armed robbery at a gas station, then a break-in at a scrapyard is reported. They find a suspicious car near the crime scene and discover several bolt cutters in the trunk.

A drunk man riots at a gas station in Mainz. The employee calls the police. When the police officers arrived on site with flashing lights, the man continued to behave aggressively and unreasonably. A scuffle ensued until the police handcuffed the man and calmed him down. Meanwhile, the two police commissioners Sarah Schräder and Jonas Horder are still looking for the missing girl on the banks of the Rhine. After an extensive search in the dark, they finally find the distraught girl. She was beaten and needs to be checked in hospital for injuries. There is trouble in front of a club in downtown Mainz. The bouncer called the police because a group of young men were rowdying and behaving aggressively. The patrol team Lena Bottländer and Gerwin Schwiersch have to call for reinforcements; they cannot handle the situation alone.

Winter: The dark season is also the time of burglaries. The team from the permanent criminal service is called to a residential building in Mainz. Burglars stole thousands of euros there and took heirlooms. A traumatic experience for those injured. Not only valuables were stolen by the thieves; The fact that strangers were able to gain access to their own house and ransack everything in the bedroom also leaves those affected traumatized. Do the secured traces lead investigators Melina Reisel and Kevin Gugenheimer from the Criminal Investigation Service (KDD) to the perpetrators? The team Sarah Schräder and Jonas Horder are called to an accident in the city center. The car was pretty much wrecked and the driver got away with a black eye. However, the novice driver was drunk. He must therefore hand over his driving license during the probationary period.

Officers from the Kriminaldauerdienst (KDD) and patrol units are deployed after reports of a man firing shots from his apartment window. While the detectives and specialists manage this dangerous situation, other officers deal with everyday police work including handling crimes in the red‑light district around St. Pauli.

During a routine traffic stop, officers in Hamburg‑Hamm discover a driver who is not only intoxicated but also being actively sought by police — leading to heightened tension and an arrest. At the same time, patrol officers from the Davidwache encounter an unexpected situation when a passersby alerts them to something involving a child.

A seemingly minor disturbance at a Christopher Street Day event becomes more complex when one party alleges harassment. Meanwhile, officers provide first aid to a man attacked with pepper spray, confront civilians undermining authority, and search for a vulnerable elderly man missing from his care facility. This episode highlights empathy and careful judgment alongside routine police work.

On the run with a hammer: Inspector Jung and her boss Enders pursue a perpetrator in Mainz's old town. Back at the station things get difficult: a rioting prisoner screams like he's out of his mind.

Funny costumes and lots of alcohol. The Old Town Guard has a lot to do during Carnival in Mainz. Does the llama go for walks with his own garbage can or is it stolen? Police Commissioner Jung investigates the matter.