The children of Herbert and Hella, two single train conductors, are going to vacation at Baltic Sea. Unfortunately the parents are to busy to go so the oldest sister is in charge.

Normal everyday life in an apartment building on Plantagenstraße in East Berlin is disrupted when a truck pulls up with the new tenants' furniture. And they include two small children - now, of all times, when old Matuschke's wife has just died and consideration should actually be shown for the widower. Even worse for Mrs. Tillack, however, is the fact that the entire male world seems to be after her 16-year-old daughter Katrin.

A master thief returns home. There he is threatened with the gallows if he fails to solve the tasks set by the count. So he has to steal the count's personal horse, the bed sheet and the wedding ring as well as the priest and the sexton.