Emmanuelle and her architect husband continue their amoral lifestyle in the Seychelles. But when a casual dilliance between her and a film director starts to turn serious her husband shows very traditional signs of jealousy.
A jaded and charming police inspector is assigned along with his cheerful partner to a case involving the mysterious death and/or suicide of a wealthy entrepreneur. The chief suspect is his enchanting wife who was aware that her husband had a mistress. It is also possible that the dead man may be the victim of a radical terrorist group.
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.
1940: During the chaotic running fights of the French army the 7th company disappears - nobody knows they've been taken captive. Only their scouting patrol, three witty but lazy guys, can escape and now wanders around behind the German lines. They'd like to just stay out the fights, but a Lieutenant urges them to use a captured truck to break through to their troops.