In Brunnenberg prison for men, the new warden introduces a revolutionary convict re-socializing project: training guide dogs for the blind. The perks make all convicts volunteer for only seven slots. Except burly macho Moskowitch 'Mosk', who cares only for the manly work out contest. The warden blackmails him, he can only do the contest if his assigned pup passes the first test. All dogs must pass or the project is halted. Unlike the others, Mosk only starts caring for his canine when it gets sick.

Hans Wolgast is executed with a shot in the head in the idyllic town of Husum to Mozart's Magic Flute. His half-brother, Inspector Anton Glauberg, immediately suspects that the shadows of the family past have caught up with him because Hans was a member of the RAF. Without initially disclosing that he not only knew the dead man but was even related to him, Glauberg begins to investigate, supported by the young, attractive but inexperienced BKA officer Paula Reinhardt. The traces lead to Berlin to the scattered remnants of the RAF and its still functioning cable groups. Wolgast lived there in a shared apartment before he, like so many former terrorists, fled to the GDR in the 1980s. A former roommate of Hans Veith Seewald points out the parallel to Glauberg to a murder case from 1978.

Three friends find a treasure map from the mysterious 'White Falcons', a juvenile gang whose leader disappeared ten years before.

Nuclear security expert Katja Wernecke (Ulrike Folkerts) helps cover up a fire in the German nuclear reactor she works in, before the government takes a decision on extending the usage license for it. But the press uncovers it. PR man Steffen Stratmann (Matthias Koerbelin) is brought in to improve the companies image - but before he can implement his plan a nuclear meltdown occurs. 2m people have to be evacuated. Wernecke re-enters the hot zone to investigate the cause...

In his own Hotel Ritz, Sophie mistakes Johannes for the expected temporary waiter and is quickly trained in the supposed task. Johannes gets involved and gets to know the hotel business and the employees from a new perspective.

When her 80-year-old father Robert needs a caregiver after an accident, Ira wants to take care of him at home - despite her difficult relationship with him. He had left her and her mother to start a second family. But now she sees the opportunity to approach him. However, given the high cost of care, she knows how to help but hire the Eastern European caregiver Elisaveta, who works for her black - much to the displeasure of her husband Marquard, who has ambitions as a local politician in addition to his work as a career counselor and never before understood with Robert.

Public prosecutor Katja Schilling is conducting a murder trial against the powerful underworld boss Mankoff. But more and more witnesses are withdrawing their incriminating statements in court, because Mankoff's arm still reaches far from prison. This makes Nadezha Shaposhnikov, the sister of the young murdered drug courier who witnessed Mankoff's crime, all the more important.

After many years, Detective Chief Inspector Steffen Gellhagen returns to his home town to solve the case of a missing schoolgirl. The former teacher Kortmann, who has a criminal record for rape resulting in death, very quickly becomes the investigator's target. However, the eloquent Kortmann is uncooperative and cynically dismissive during interrogation. Gellhagen is convinced that the man knows more than he is admitting. As the pressure from the media and the outraged citizens grows, the police officer has to decide how far he wants to go to get Kortmann to talk.

The life of gay 16-year-old Daniel goes completely off track as he is being held responsible for the killing of a small boy who was abused and killed.