When Valérie's husband Yves confesses he's in love with another woman, she happens into a judo club and begins lessons. She likes it, she's a natural, and she's attracted to Bruno, the quiet instructor. He likes her as well, but sees social class as a barrier, and Yves never seems to be too far away. Valérie's two close friends have their own stories: Annette is continuously looking for a husband, with little luck. Clara cares more about wealth and power, and takes up with the country's finance minister, an older man who flips for her. Meanwhile, Yves's lover doesn't seem in a hurry to leave her husband, so Valérie looks good to him from time to time. Will Bruno ever make a move?

Trois copines font le compte de leurs amants passés. Annette la paysagiste délurée qui accumule les aventures ; Clara, l'architecte ambitieuse qui cherche un amant utile et Valérie, l'architecte sentimentale qui est heureuse en ménage. Le jour même, à la suite d'un quiproquo malheureux, Yves, le mari de Valérie, décide de divorcer et quitte le domicile conjugal. De nouvelles aventures commencent...