Fernand Pradier (Gabriel Signoret) is an honest merchant and a simple person at heart who tries to make her daughter Germaine (Gabrielle Robinne) happy. She is engaged to a rich banker St-Bris (René Alexandre). However, the fiance once belonged to a criminal organization and, despite his efforts of rehabilitation, one of his ancient accomplices makes their engagement impossible. Eventually imprisoned, she escapes with the help of a beautiful typist (Stacia Napierkowska)...