As every year, German brewery tycoon Karl Schneibel spends the summer holiday on an Italian island with his beloved grandson Christian, near the children's home run by his ma, Dr. Gioia. This year however, Christian's heart isn't in his summer fling but his lover at home, Anna, daughter of Karl's general manager Dr. Werner. Christian has a bad eye in Veronica, the woman who became Karl's much younger lover 'by travel fate', the first thing soon proved untrue. But by then, the Schneibel firm and estate have been taken over according to an elaborate conspiracy, which Christian takes on with some help from his friends.
Mario Adorf
as Karl Schneibel
Marianne Sägebrecht
as Fräulein Klara
Antonella Ponziani
as Gioia
Francesco De Pasquale
as Christian Schneibel
Francesca Romana Messere
as Anna Werner
Catherine Spaak
as Veronica Benetti
Paolo Gasparini
as Sandro Berardi
Enzo Marino Bellanich
as Dr. Werner
Luciano Roffi
as Anwalt Sammler
Jacques Sernas
as Dr. Van Kleest