In Paris, four men in their 40s meet regularly to play tennis and socialise: Étienne Dorsay, a senior civil servant, is married to Marthe, with whom he has two teenage daughters; Simon, a hypochondriac doctor, lives with his overbearing Jewish mother; Bouly is a serial womaniser whose wife keeps leaving him; and Daniel, a car salesman, has a secret relationship with another man while having an affair with a much younger man. Marthe, who has resumed her studies to obtain her university diploma, constantly rejects the unwanted advances of 17-year-old Lucien, a close friend of one of her daughters. In the car park of his office building one morning, Étienne sees a beautiful young woman walk over a grating when, like
Marilyn Monroe, a blast of air blows her red dress over her head. He becomes instantly attracted to her and sets out to pursue her, despite his loyalty to Marthe. A photographic model named Charlotte, she is amused at his attentions and does not discourage him too ferociously. She invites him to meet her in London, where she is on an assignment. Étienne lies to Marthe that he has to leave on a business trip, but his plane is diverted to Brussels due to fog. Back in Paris, Daniel drives Étienne and Charlotte to the apartment of Étienne's godmother, to whom he is devoted. There, they find Étienne's family, including his wife and daughters, who have all gathered to throw a surprise birthday party for him. Daniel covers for Étienne by pretending that Charlotte is his girlfriend and takes her home. Later that night, as Étienne leaves with his family, his friends devise a scheme to take him to meet Charlotte at her apartment, where the two ultimately consummate their mutual attraction. The next morning, Charlotte's husband calls to inform her that he is downstairs, having returned expectedly from a trip. She hurriedly instructs Étienne, who is wearing a dressing gown, to wait on the ledge outside her eighth-floor apartment window, assuring him that her husband will not stay long. However, the couple closes the window as they have sex, leaving Étienne trapped on the ledge overlooking the
Champs-Élysées. Étienne attracts the attention of a crowd of onlookers, who assume that he is suicidal. The fire brigade soon arrives and deploys a
life net while a television crew films the rescue, which is watched by his friends, as well as his wife and daughters. In the street below, Charlotte waves goodbye to Étienne as she leaves with her husband. Étienne searches for possible conquests among the crowd and, after noticing an attractive blonde reporter, proceeds to jump into the life net as he remarks that he is "only at the beginning of [his] ascent". ==Cast==