A "rabbit" and a "brown bear" dance at dawn in a clearing in the forest - until a well-aimed shot kills the bear and leads the investigators into the world of furries. The Dead Man in the Brown Bear Costume is a furry party organizer.
16-year-old Emil Schmidt finds his dead mother Lissi and, in a panic, dials the emergency number. In the course of the investigation, Matti manages to find access to the disturbed boy.