Oscar Bänz is a solid, middle-class taxi driver and widower. He loves his daughter Irma with all his heart. In order to provide for her, he has not remarried. Irma, a quiet, intelligent young woman, is studying medicine. To finance her education, Bänz rents a room to Toni Schellenberg, a young man from the countryside with a promising future as a soccer player. But the big city, easy money, and superficial friends cause Toni to neglect his training and evening classes, and eventually his employe...