In Saint-Nazaire in 1967, a hotbed of workers' struggles, Clémence, 26, is married to a young worker, Gérard. Like many women of her generation, she does not work and takes care of her two children. But she longs for a different life while Gérard confuses the happiness of his family with the acquisition of household appliances. Trained by an old friend, Agnès, in family planning meetings, Clémence will meet a young philosophy teacher, Jérôme. For him, she will abandon her husband and her children, and try to live the utopia of a life of total freedom. Blinded by his pain, a stranger to his wife's questioning, Gérard will have to become aware of the upheavals that will overwhelm society a few months later. Life will never be the same again.

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.