Little Erna is a cheeky Hamburg girl. She gets up to the greatest pranks with her boyfriend. That's why her mother sends her on vacation alone to her aunt. There, too, the little girl gets up to all sorts of mischief...

At the center of the story are building contractor Patschold, who juggles advances and loans, and his shrewd chauffeur Göhrke. Patschold's wife almost suffers a nervous breakdown and his mistress makes ever greater demands.

Actress Serena Lattimore refuses to agree to a divorce when her husband Quentin Ballard tells her during a premiere party that he loves the young Gaby York and intends to marry her. Serena invites Quentin's friend over for a chat, during which a heated dispute ensues, and soon afterwards an alleged suicide is reported to Scotland Yard. Inspector Oscar Garth takes over the investigation...