Ronny is a young designer on her way to the capital of the Ruritanian Kingdom of Perusa with the costumes she has created for the operetta written by the Prince. On her journey, she meets the prince and is persuaded to take the place of the star who had just walked out. The prince falls for Ronny but how can he marry a commoner?

Käthe von Nagy plays Ronny, who designs the costumes for the upcoming premiere of an opera written by the young prince of Perusa (Willy Fritsch) and has to deliver them personally due to the urgency of the commission. Arriving there, the prince not only is charmed by the young lady (who wouldn't?), but also mistakenly believes her to be the famous singer who is to be the female lead in the opera. What Willy does not know yet is that the real singer has cancelled her appearance, and as the state ministers hope to distract him from politics with the performance of the opera, they indeed want Ronny to appear in the show….

René, a simple employee of the Univers agency run by Mr. Lebourdier, loves Yvonne. But Mr. Martin dreams of a brighter party for his daughter. In order to win the post of deputy director, René asks Nenette, a pretty blonde, to seduce Mr. Lebourdier. But Nenette is Mr. Martin's girlfriend and she manages to fix everything.

A young man is kidnapped by his business competitors, but the jailer falls in love with the man she has to keep a prisoner. A lost film.

The rise of a crooked employee of a bank and the attempt of a former co-worker to bring him down.

A famous tenor manages to charm away a lovely young lady who was just about to be married to the opera director.