Bank manager John Valera is a man of the world, a dazzling-looking gentleman from head to toe. Tired of his business, he one day leaves everything to have a rest, leaves his workplace in Berlin and travels incognito to Italy, where he wants to unwind and spend a holiday like never before. As his travel budget starts to shrink more and more, Valera is not reluctant to accept various jobs and earns his living as a jazz trumpeter, servant, chauffeur and assistant to a gang of thieves.
Landlord Kohlhiesl has two twin daughters that nevertheless couldn't be more different: Liesel is beautiful, feminine, sophisticated, educated and in love with a fellow, Toni, from back home. The other daughter, Susi, is clumsy, masculine, never left home and wants nothing to do with men. Liesel would dearly love to marry Tony, but her father refuses to allow the wedding until her sister Susi has found a husband first...
Aspiring singer Susanne takes over for ham actor Viktor at a small cabaret in Berlin where he works a woman impersonator and per chance she's discovered by an agent, who thinks, that she really is a man. She becomes famous, but her situation becomes troublesome, when she falls in love with Robert.
After Clown Teddy lost his son, he lost his gift for laughter. He opened a joke shop and lives above the shop. His landlady has had a foster son since birth, and Teddy decides to raise the child, who always believed that Teddy was his father. When the mother suddenly appears five years later and wants her son, Teddy decides to run away with the child and goes back onstage with his son. Will the family catch up with them, or will the mother never get her son back?
