A couple make the decision, after twenty-five years of marriage, to live separately, so as not to fall into the trap of routine. On their wedding anniversary, Brigitte and François Dupuis announce their decision to separate, to the chagrin of their children. After twenty-five years, they chose to enjoy their life, but each on their own. Everything is going for the best. François rediscovers the life of a bachelor, meals with friends, at night with friends. Brigitte, for her part, met a movie buff whom she took as a lover. From time to time, François and Brigitte meet again. It doesn't take long for them to realize that they get along better and better ...

Jean Carmet
as François Dupuis

Marie Dubois
as Brigitte Dupuis

Rachel Jenevein
as Nathalie, the eldest daughter

José Luccioni
as Roger, Nathalie's husband

Gilles Laurent
as Gilbert, the son

Christine Deschaumes
as Josyane, Gilbert's wife

Marie Véronique Maurin
as Sophie, the youngest daughter

Ginette Tacchella
as Valentine, the pianist

Alain Doutey
as Gérard Martin

Clément Michu
as Lift attendant