A woman seeks the blessing of her wealthy father when she becomes engaged.

Michèle, 20 years old, feels terrible after having broken up with her boy-friend. She meets Francois, who's a veterinarian and jewish. Michèle decides to convert into Judaism because she has to believe in something, if not in someone.

The film follows Etienne, a 40-year-old car designer, who takes time off from work to study sexual mastery from a Zen master and several prostitutes, in the hopes of having the sexual skill to impress Laure. Laure, a blonde who was introduced to him by his friend Jacques, told Etienne on January 1 that she will not have sex with him until May 27 that year at precisely 9 PM.