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.
Willy Millowitsch
as Anton Klapproth
Barbie Millowitsch-Steinhaus
as Joefine Krüger
Peter Millowitsch
as Eugen
Ruth Brück
as Ulrike
Karin Pittner
as Ida
Ariana ben Sliman
as Franziska
Eugen May
as Alfred
Ulli Schmissat
as Ernst
Olaf Kreutzenbeck
as Fritz
Harry Tagore
as Schöller
Karin Buchali
as Amalie
Jana Hora-Goosmann
as Friederike
