Tristan Grünfels, a psychologist and victim counselor for the Frankfurt police, has problems. He keeps losing his temper, talking to himself and then losing touch with his already dysfunctional family. When he leaves the chaos of his home one morning to head to his practice, one thing leads to another and he kills a police officer. Unfortunately, a misunderstanding leads him to become the victim counselor for the relatives and thus unintentionally accompanies Janneke and Brix in the investigation into the murder case. While his inner voice keeps telling him to turn himself in to the police, everything only gets worse: his wife is having an affair, his teenage daughter is pregnant and his son prefers smoking weed to going to school. The situation escalates and the entanglements between Grünfels, Brix and Janneke culminate in a major showdown.