Paris in the 1920s. Marguerite Dumont is a wealthy woman with a passion for music and the opera. For years, she has performed regularly for a circle of guests. But Marguerite sings tragically out of tune and no one has ever told her. Her husband and her close friends have always encouraged her in her illusions. Things become very complicated the day she gets it into her head to perform in front of a genuine public, at the Opera.

Occupied by family problems, a 13 year old Vojto takes every responsibility around the house. One day while on a train to school, he sees this girl, Kajka, and falls madly in love with her. Despite his busy life, he decides to win her heart by any means possible.