Elén, a girl living with her mother and stepfather in a secluded forest, has a great singing talent. On her twenty-first birthday, she runs away from home and on the train, millionaire René falls in love with her. Their paths soon diverge, only to be reunited soon after. Violinist Pavel Sedloň falls in love with Elén, and although Elén does not love him, she is determined to marry him. At that time, René dies, exhausted from working on the operetta Srdce v delirium. However, he is saved at the last moment and everything comes to a happy ending when Oldřich Nový explains how the authors actually meant it all.