In Paris, where he wields his money scams, Alex has an unexpected encounter with two girls: Fred, who’s nothing to do with his world and who he falls for straight away, and Sylvia – sweet, but lonely, Sylvia. To test Alex, Fred devises a curious game of seduction. Like a character out of a Marivaux play, she toys with setting up delightful obstacles necessary to Love’s flourishing: Sylvia must seduce Alex, and Alex, must in turn, truly desire Sylvia. But Fred gets caught in her own trap. She falls head over heels in love with Alex. However, he no longer knows who to choose, all the more so now that Sylvia is falling in love with him, too. During an eventful night of confusion and intrigue, crazy laughter and tears, our threesome come to realize that what really draws them together is an emotional bond: true love.

Sabine vows to give up married lovers, and is determined to find a good husband. Her best friend Clarisse introduces her to her cousin Edmond, a busy lawyer from Paris. Sabine pursues Edmond, with the encouragement of Clarisse, but Edmond does not seem very interested.

Passionate about music, Julien nevertheless works with a sculptor. One day, he meets young Hermine at a religious bookseller.

Camille, a young, provincial, proletarian man works for Hélène Courtray, who is still beautiful and seductive. She's a sophisticated, cultivated and well-to-do woman who has engaged him to care for her reclusive son who has spent the past few years voluntarily locked up in his room. An encounter between two persons and two worlds where the relationship of the young man to this closed, strange and unknown universe rapidly turns tragedy.

An aging dentist looks for a little liveliness by abandoning his wife in favor of a younger woman. When he learns that his mistress also has another younger lover, he gets jealous, but tries not to make an issue of it. In the end, he dumps her and returns to his wife, who is not about to stand for his middle-aged immaturity. She leaves him.