The director of the Warsaw operetta has problems with putting together a team. He cares very much about acquiring the star of the stage - Jadwiga Janowska. However, she is currently in Paris with her husband, diplomat Henryk de Fontana. It turns out that Ambassador Rossi falls in love with her. Jadwiga goes to Warsaw, where in her apartment her friend Apolonia trains a young adept Wanda to play on stage.