Following the death of their miller father, his eldest son inherits the mill, the middle one a donkey, and the youngest a cat. While initially disappointed, the lad soon learns not only that the cat can talk but is quite resourceful.

Margitta Sonke
as Hinz, der Kater

Harry Wüstenhagen
as Hans / Heinrich, Graf von Karabass

Christa Oenicke
as Prinzessin Rosine

F. W. Schröder-Schrom
as König Wonnebald

Helmut Ziegner
as Zauberer Saufdichvoll

Brigitte Fredersdorf
as

Waltraud Forster
as

Günter Hertel
as Franz

Wilhelm Groothe
as Grenzwächter