The water fairy Rusalka falls in love with an earthly prince. In vain, Father Aquarius warns her. Her sincere feelings are met with human treachery...

Adolf, the irresistible seducer of women, is fond of Janicka, a novice opera singer. The girl, however, prefers famous men and Adolf thus does not have a single chance with her. One day in a hospital, he meets a Greek partisan named Apostolek who impresses him with his spontaneity and ease in solving all problems, especially those with women. Adolf has an idea for a revenge. He makes Apostolek familiar with social manners, dresses him after the latest fashion and introduces him to Janicka as a Greek conductor. Janicka instantly falls in love with the made-up composer and Apostolek does no better.