A man creates a national scandal after he mistakenly kisses the wrong woman in a darkened cinema. The following year it was remade as an American comedy One Rainy Afternoon, released by United Artists.

Pierre, who is a Fine Arts student, and Denise, who is a chemistry student, work for a department store where, wearing wedding suits, they distribute flyers to passers-by. The store manager, Bernard, falls in love with Denise and arranges to take her to an inn not far from Paris, run by the handsome Robert. This one opens Denise's eyes who ends up returning to her home. After a fight between Pierre and Bernard, Denise ends up choosing to stay with Pierre.

An officer, two of his comrades and a social worker want to create the "Carrefour", a place for lost children and teens to give them a chance not to fall by the wayside and spend most of their life in jail.