Willy, Jean and Guy are broke, so they sell their car and open a filling station. Then they all fall in love for the same girl. Simultaneously filmed French version of the German musical "Die Drei von der Tankstelle".
The Comedian Harmonists sing various German folk songs in a picturesque landscape.
Simultaneously made French version of "Ihre Hoheit Befiehlt": An officer, posing as a deli clerk, and a princess, posing as a manicurist, meet at a ball. The court especially the prime minister oppose a marriage, for political reasons.
