A transsexual becomes a star of Paris and lives a crazy love story with the lover of a friend. But the young man comes to his senses and his bourgeois upbringing. A victim of prejudice, Vicky has no choice but to kill herself.

In czarist Russia, a neurotic soldier and his distant cousin formulate a plot to assassinate Napoleon.

Two couples, undermined by frequent scenes, fall apart: the men, Richard and Bertrand, directors of an advertising agency, move into their office; soon Lucien, their main client and friend, suffering from the same afflictions, joins them in this new bachelor life. For their part, the women regroup and organize themselves: Victoire absorbs herself in her work as a decorator; Charlotte, long submissive to Richard's personality, raises her head and finds a job; as for Pascaline, she runs off with Tabard, her husband Lucien's groom, to start raising sheep. These three crises, combined with a series of twists and turns, bring unexpected results for each of the couples.

A playboy who refuses to give up his hedonistic lifestyle to settle down and marry his true love seeks help from a demented psychoanalyst who is having romantic problems of his own.