Since the day their mother Aline remarried, Patrice and Eric, a joyful pair of twins, have been very happy. Indeed, François Chantour, their stepfather, is very kind and behaves like a big brother to them. Even if they are not very rich, the four of them live a cheerful life in their charming house. The trouble is that, in Lyon, the family on the boys'father's side are worried, especially the twins' grandmother, who fears Patrice and Eric are given a bad education. She therefore brings them to her big house in the hope of their improving their manners. A very unfortunate decision indeed.
Charlotte Bertier
In a small provincial town, the boarding-house is run by Mathilde Belin, the overindulging and over-demanding mother of Paul. When she is told by her envious sister Charlotte that her son is having a secret affair with Catherine, a salesgirl, she becomes furious and starts doing everything in her power to separate the lovebirds.
(uncredited)
Teresa (Juliette Greco) estaba a punto de ingresar en un convento, pero debido a la muerte de sus padres decide dedicarse a cuidar de su hermana Denise (Irene Galter), que ha sido violada por Max (Philippe Lemaire). Teresa intenta que Max repare el agravio, pero lo que ocurre es que Max acaba enamorándose de ella.