Olivier, Rémi and Pascale are three longtime friends, close to their forties. Surrounded by their spouses and children, they form a kind of close-knit clan. But this group will know its first questioning. Olivier begins a serious relationship with Stéphanie, a woman younger than him. She seems to give him back a taste for life as he complained about her monotony. Pascale, she leaves a weak man, failed diplomat, for a politician who knew how to seduce her by showing himself voluntary. Rémi, a teacher, can't stand it when his partner Estelle can't give them children. Depending on these hazards, the small group will go through difficult times.