An excursion boat on Lake Constance. Good-humored passengers celebrate at a costume party. In the middle of it all is Elena Barin on the day before she takes up her post as head of department at the Constance criminal investigation department. She is traveling as a tourist - until the moment she notices a weapon on a passenger.

Tim is the new one in the team. During training, he introduces himself to Klemme, Arlo and the other boys. But the longer he spends time with them, the more he realizes what he's actually dealing with - little wieners.

19-year-old Jamal loves music. But his friends don't appreciate his taste in music. When he meets the young musician Victoria, he is able to embrace his romantic nature and finally come to terms with his father's death.