Kacenka is a country girl who is sent by her uncle to Prague, where she works at first as a helper in a grocer's shop and later in a butcher's shop. Her sweetheart, Vincek, follows her to town but he has no luck. Kacenka, according to the predictions of a gipsy meets a rich engineer named Romanovský who charms fer. One night thieves break into the butcher's villa and rob the safe. Kacenka is forced to find a new position with doctor Koulová. Her next post is as a maid in the house of the banker Tomícek whose wife is a film-star. However, Kacenka refuses Vincek's offer of marriage and succumbs to Romanovský. On his own initiative, Vincek tracks down the band who committed the robbery and finds that it is led by Romanovský. Kacenka finally comprehends that she was use by Romanovský and returns to Vincek. She finds him just in time and manages to prevent him from committing suicide and embraces him.