Wednesday is the day when children are not in school and stay at home. It is also the day when the parents are not there. In Nantes, in the spring, twenty or so carefree and boisterous kids between the ages of three and eleven take advantage of this day to make their parents go crazy. Emma, 9 years old and naturally romantic, decides that Roland, the little boy she met in the street, is unhappy and persuades her friends to adopt him. Victoria spends the day with Martin Socoa, an often distant father whom she learns to love. There are also Muriel, Bruno, Colette and Henri who take off and create panic in their parents' home, while Marylin lives the founding drama of her childhood with a mother of an unreal sweetness. Throughout these little stories, we realize that the world of children has its own logic, totally different from that of adults.

The story begins in a public garden where Antoine, a young director, is preparing a film with two drama students. He is in love with one of them, but he does not dare to tell her that it is because he loves her that he makes films with her. Then to give the change, he speaks to her about his conceptions of the cinema.