Topsy Müller wants to be a professional dancer, but her father thinks it's an improper profession for a respectable girl, so she works at a newspaper stall in a Berlin hotel. When a new revue opens in town, the Press Manager, Otto Schräge of the revue goes to the hotel to see the leading lady, and Topsy recognises him from a photograph in the newspaper, but both the impresario, Korty, and Otto are in the picture, and Topsy assumes Otto is the boss, Korty. Romantic interest develops until Topsy's father bursts in during a kiss, and he explodes. Nonetheless the revue is short of performers and they eventually reach Topsy by telephone, and persuade her to come in to see the boss to discuss a possible part; she arrives and thinks that Otto is Korty and the real Korty is someone else. After some song and dance numbers, Topsy's father arrives and his worst suspicions about Bohemian theatre life are confirmed; Korty's wife arrives and is told that her husband has an unknown son (Otto of course, in his identity as Mr Korty). Everything is getting very complicated; will another song and dance number help everyione to resolve the misunderstnadings and live happily ever after?