Margitta (Diana Urbank) is a singer in the band "Himmelblau" (Sky blue). During the day she works in her mother's boutique (Karin Ugowski). Her mother wants a solid career goal for her daughter and wants Margitta to take over her boutique later. But Margitta dreams of a great career with her boyfriend Hans (Karsten Speck). Hans takes out a private loan from the coal dealer Hertel to buy instruments for the band. As security he gives Margitta's mother's car - without her consent. He gambles too much and rides himself more and more in financial difficulties. In doing so, he abuses the trust of people who love and respect him and eventually becomes a criminal. From the dream of "Hans im Glück" and the band "Himmelblau".