Ten-year-old Brigitte spends holiday with her father Peter on the Baltic Sea and everything is perfect until they meet strange and beautiful woman on the beach.
Ekke and Karsten are newcomers to the shipyard. Paddy claims to have heard it on Rügen radio. But the two did not fall on their heads, even if they still fear that their accommodation, the "Fritz Heckert" accommodation ship, could be - as it is called - a "working-class monastery". Not only do they find out from Paddy that such worries are unfounded, they experience it for themselves.
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.
