The student Nora Beier is found murdered. Her body shows signs of torture. Along with her fellow student Liane Hellmann, she worked for an escort agency while she was studying. The boss of this agency refuses to release her customer file.
Investigator Jan Maybach has become the victim of a perfidious intrigue. Liane's testimony weighs heavily on him. It all looks like he pursued Liane as a stalker and shot her boyfriend out of jealousy. Jan is taken into remand.
After a book premiere party, the young writer Henriette Bach is found dead in the basement of the Leipzig Literature Institute. The young woman died chained to a sauna heater in the heat.
The daily drive to kindergarten takes an unexpected turn for investigator Ina Zimmermann when her son Paul sees a chimpanzee on the street. Ina follows the animal, which flees into a completely devastated laboratory.
One night, 15-year-old Niklas Kriewall disappears without a trace from the hospital where he has been treated as an inpatient for several weeks. The investigators initially assume that the boy was kidnapped.
The remains of a male body are found during construction work in the center of Leipzig. Investigations show that it had been there for around 20 years. The man was killed with a knife. The identity can be determined via the tooth image.
A luxury restaurant is ambushed by a group of masked youth activists. They want to demonstrate against the sale of their district to the wealthy. During the action, a guest of the restaurant is stabbed with a steak knife.
The financial advisor Henning Baumann is found murdered in a forest near Leipzig. Two weeks earlier he had been reported missing by his much younger wife Cora. Was he kidnapped? But why wasn't there a ransom demand?
In a suburb of Leipzig, 17-year-old Leon Köster dies in a fire in a garden shed. It is an assassination attempt because the doors were locked from the outside and the fire was started.
25-year-old Alexa Demski and her baby are missing. Her parents are very worried. Under the kitchen furniture, the investigators find the remains of carefully wiped away blood that can be clearly assigned to Alexa.
At night, the remote house of the retired couple Miriam and Hannes Wagner is broken into. Hannes Wagner kills the burglar in self-defense. The investigators find out that the alleged burglar was a private investigator.
After visiting a pub, investigator Hajo Trautzschke discovers two armed men and pursues them into a dark underground car park. Even before the requested reinforcements arrive, a fight ensues.
Wolfgang Welter had lost sight of his daughter in the botanical garden when seven-year-old Jule suddenly disappeared without a trace. The investigators get caught up in a bitter war of roses between the divorced parents.
Ina has to face an internal police investigation. It's about the suicide of a young woman who threw herself off the roof of the hospital after being raped. Ina did not succeed in stopping her from the desperate act.
The daughter of detective Dr. Woernle is found in her apartment badly injured by a shot in the stomach. Apparently she had a nightly visit from two young men she met in a nightclub.
During an emergency call, the patrol officers discover the actor Gojko Mitic with bloodstained hands next to the body of the doctoral student René Arent. But Mitic denies the crime.
After a young woman ran in front of a car driver in the middle of the night, SOKO was called to the hospital. The woman bears the marks of a struggle but can't remember anything - not even her own name.
During a 480-day mission to Mars, shortly before returning to Earth, Holger Jankus, the spacecraft's commander, is found dead in his bunk. Of course, the Mars mission is not a real flight, but a simulation in the psychological institute.
During a robbery at a beverage market in Leipzig, employee Manuela Geseke is shot dead by a masked perpetrator and an uninvolved witness is shot. At first everything looks as if the beverage store has been attacked by a serial criminal.
A fire devil has kept Leipzig in suspense for weeks. When there is a fatality in one of the burned buildings, the investigators are under great public pressure. The dead man was himself a member of the volunteer fire brigade.
Hajo Trautzschke gets a visit from his old friend Jack Meadow from London. Jack has meanwhile resigned from his police service. But it soon becomes clear that Jack didn't come to Leipzig because of Hajo.