Baron Franz von Naydek is constantly being mistaken for Prince Woronzeff, since both look identical. One day, Woronzeff decides that this similarity might come in handy. Since he is very ill and can no longer deal with the intrigues of his relatives, he begs his friend Naydek to play the role of prince for a while. Naydek agrees and everything seems to be going splendidly. Woronzeff’s ex-nag Diane sees through the game, however, but says nothing, since she’s fallen for Naydek. He, in turn, has the hots for Nadja, Woronzeff’s daughter, long thought lost and who has now reappeared. The prince’s relatives fear for their inheritance and so refuse to acknowledge Nadja’s existence. In the interim, Woronzeff dies. Now Naydek is obliged to play the role for a much longer time than he bargained for.
| Actor | Role |
|---|---|
 Albrecht SchoenhalsFürst Woronzeff & Baron Franz von Naydek | Fürst Woronzeff & Baron Franz von Naydek |
 Hansi KnoteckWoronzeffs Tochter Nadja | Woronzeffs Tochter Nadja |
 Willy BirgelPetroff, Woronzeffs Sekretär | Petroff, Woronzeffs Sekretär |
 Brigitte HelmDiane Morell | Diane Morell |
 Fritz OdemarOnkel Gregor | Onkel Gregor |
 Günther LüdersVetter Boris | Vetter Boris |
 Edwin JürgensenDer Untersuchungsrichter | Der Untersuchungsrichter |
 Vladimir SokoloffPetroff | Petroff |
| HHeinrich BergOtto von Naydek, Bruder Franz von Naydeks | Otto von Naydek, Bruder Franz von Naydeks |
| AAmanda LindnerTante Lydia | Tante Lydia |
 Jakob TiedtkeOnkel Iwan | Onkel Iwan |
| KKurt FußLéon, Agent | Léon, Agent |
| WWalther LudwigSänger: Duett aus 'Samson und Dalida' | Sänger: Duett aus 'Samson und Dalida' |
| RRuth BerglundSängerin - Duett aus 'Samson und Dalila' | Sängerin - Duett aus 'Samson und Dalila' |
| FFred GoebelNot listed | Not listed |
 Adele SandrockNot listed | Not listed |
| EElisabeth von RuetsNot listed | Not listed |