Shortly before the end of her shift, Ms. Kaiser receives a visit from a well-groomed but pushy man with whom she apparently shares a past. The conversation makes the police captain uncomfortable, and she eventually shows the man the door.

Shortly afterward, as she is about to leave the precinct herself, she is overpowered by a masked man. The next morning, her colleagues search in vain for their boss. The testimony of Girwidz, who had seen the visitor arrive, and a court summons for Ms. Kaiser ultimately fuel the suspicion that she has been kidnapped.

In fact, Ms. Kaiser is scheduled to testify soon as a witness against her former Munich colleague Christoph Lukas—whom Girwidz immediately recognizes as the visitor from the night before. When Christina discovers that Christoph Lukas has checked into a hotel by the lake, her colleagues want to move in immediately.

Before the raid, however, Girwidz seizes the opportunity and puts himself back in charge of his team: After all, in the boss's absence, he's the only one on the team with leadership skills! But despite his leadership skills, the operation turns into a disaster: Thanks to Riedl, Christoph Lukas ends up in the hospital and falls into a coma—before he can tell them what he did to Ms. Kaiser. While Riedl blames himself, a race against time begins for the colleagues …