 A little French town during the Occupation. Barny is a young sexually frustrated widow, living with her little girl France. She is also a communist militant, and one days she enters in a church, randomly choses a priest and starts criticizing the religion. But the priest is a young handsome clever one, Leon Morin. He does not offer her the reaction she was expecting. She is disturbated. She starts frequenting him, impressed by Morin s moral strength.