Ave Maria.

Karin Twerdy used to be an opera singer but now, in order to pay for her daughter Daniela's education in a religious school, she performs in a shady nightclub. Industrialist Dietrich Gontard, the father of Karin's school friend Christa, falls for her. But when he learns the truth about her he is outraged and rejects her. At a loss and not to stand in the way of Daniela's future, Karin chooses to disappear...