The young architect Hannes Cremer wants to forget all professional stress on his grandfather's Black Forest farm. He falls in love with the student Renate, but her romance is thwarted by Hannes' beloved admirer Janine. When Renate disappears, Hannes and his friend Uwe find so many surprises. Music comedy with Roy Black.

Car salesman Mark sails down the Rhine to Amsterdam in an old barge with his friend Ulli and a girl named Elke. During his shore leave, Mark repeatedly encounters the pretty tour guide Petra, who is traveling to the same destination with a busload of tourists. The two fall in love.

The enterprising Anton Klapproth runs a flying duck farm in the Eifel, but now he finally wants to experience a real adventure in the big city of Cologne. A visit to a sanatorium for the mentally ill seems particularly sensational to him, as there is certainly a lot going on there with the "Jecken" and would provide plenty of story material for his regulars' table. In return for a loan, Anton's nephew allows his uncle to stay at the Pension Schöller. However, the guests there are by no means mentally ill, just rather eccentric. However, the unsuspecting Anton has a great time, thinking he is in a psychiatric institution.