Zdenka, the daughter of the banker Urban, and her friend Máňa, make the acquaintance of the nephew of factory owner, Jaroslav Klement and the workman Vladimír Skála. On Sunday they all go to the amusement park. Máňa is not aware that Jaroslav is a wealthy man while Vladimír knows that Zdenka comes from a rich family and this causes him much concern. A party in the Urban's house is broken up by Zdenka's mother who orders her daughter's friends out of the house. Zdenka admits that she loves Vladimír, but her mother will hear nothing of it. A companion of Mrs. Urban, Ema, is chatting in the bar to a man who claims to be a baron. She ends up at the police station where she is rescued by Máňa's brother Václav. For this service, Václav is rewarded with her favour. Jaroslav is to take over the factory and get married to a suitable wife. The wedding takes place in the simple flat of Máňa's parents. From here Jaroslav takes his guests to his villa. It is only now that he can ask the Urbans for Zdenka's hand in marriage for his friend Vladimír who is now to become his partner.

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