Jean-Pierre, a wealthy businessman, is lonely. He still desires his wife but she only seems interested in shopping and the beauty salon. Tired of lunching alone every day, one day he decides to invite his chauffeur to join him, and a relationship quickly develops as the two find they have much in common. Are they just cash machines for their wives? Don't they deserve some love in return? Jean-Pierre confiscates his wife's credit card, but things don't turn out exactly the way he'd hoped...
Louise, who has just written a novel, comes to Paris to meet with a potential publisher. While in the city, she stays with her older sister, Martine, who in many ways is the exact opposite of Louise: she lives in a fashionable neighborhood, is cold to others, and has snobby friends, while Louise lives in a small town and is thoroughly unpretentious. Louise's apparent happiness -- and similarities to their mother -- gradually gets on Martine's nerves.