Nadine and Thies Nowak are in the worst marital strife: the not thriving restaurant, Nadine's pregnancy and Thies' inattention are the reasons. Her daughter Michelle can't take it anymore and runs away. The next morning the little girl is found dead on a ferry. No witnesses - the upper deck of the ferry was swept empty on the rainy evening. First results of the autopsy: Michelle's body has hematomas and a healed broken rib. Both older injuries unrelated to her death. Michelle was undoubtedly choked with her own jacket -a few hours after her mother alerted the police to Michelle's disappearance. Investigating the Nowak family's environment, Inspector Borowski and Frieda Jung come across Tim Hansen, a waiter at Thies' restaurant.
He confirms Borowski had contact with Michelle. But is he really a suspect just because he went swimming with the girl? The situation at the Nowaks escalates, not least because Thies' ex-girlfriend Saskia has reappeared in his life. One more reason for Frieda Jung and Borowski to take a closer look at the family situation...