The investigations in the case of the murdered Manfred Depke lead Lena Odenthal and Mario Kopper to a supervised shared flat in Depke's suburb. The four girls in the group home are scared because petty criminal Bernd Borgwardt, who comes and goes in the flat, raped one of them and is now trying to silence her with threats . Lena supports caretaker Sarah Herzog in her efforts to get Boogie out of business with the help of the authorities. But as the evidence mounts that Boogie is also involved in the Depke case, it becomes clear that the interests of the narcotics squad stand in the way of an arrest.