In Paris, Alexandre, an unemployed young man with memories of the May 1968 events in France, attempts to persuade his former love, Gilberte, to marry him. Gilberte opts to instead marry another man. Alexandre is involved with a live-in girlfriend called Marie, and is interested in films such as The Working Class Goes to Heaven. One day, after an unsuccessful reconciliation with Gilberte at the highly popular Les Deux Magots café, he meets Veronika, a Polish French twenty-something nurse. In the midst of the sexual revolution, Veronika is highly promiscuous, and begins to make advances on Alexandre. During the summer of 1972, Alexandre and Marie are nude in bed in their apartment when Veronika visits. Marie lets her in and Veronika insults both of them, but acknowledges she is not pure herself. The three begin a ménage à trois and sleep in the same bed, with Veronika assuring Alexandre she and Marie both love him, and telling him to be more happy with his situation and life. Although Marie affirms her indifference to Alexandre's affairs, she quickly changes her mind when she sees how close he becomes to Veronika. This leads to a growing estrangement between her and Alexandre. As the three sit together, Veronika attempts to reassure Marie about her looks and body. Tearfully, Veronika speaks about how she believes no women are truly whores, and how love is meaningless unless it produces a child.