Nelly (Isabelle Huppert) is a middle-class Parisian housewife, married to possessive husband Andre (Guy Marchand). When she meets street thug Loulou (Gerard Depardieu), her middle-class respectability is thrown out the window and she leaves Andre for Loulou. Loulou, who has no job and resorts to robbery to survive, is more than willing to live off Nelly's money. But Andre won't give her up and, in the mind-set of a middle-class bourgeois, tries to convince her to return.