A gang of pirates rape the two sole survivors of a ship wreck. The violated girls are rescued by the strange inhabitants of a supposedly haunted island, where they are granted supernatural powers to strike revenge against the pirates.

Bryan is an American journalist, married with two young daughters. Assigned to cover the Paris Conference on Vietnam, he is approached at the airport by two stewardesses, Corinne and Lucile. They meet again, talk politics, but the discussion veers off course: “Do you know how to make love? - Of course, I'm married.” Bryan sleeps with Corinne as Lucile looks on, then confesses to both women: he feels no remorse, but he's sad that it's so easy to cheat on your wife. “Corinne is a free woman,” as Lucile later tells Bryan. The latter is too puritanical and romantic to accept being just another fling. He thinks of nothing but the young woman, and is constantly on the lookout for her.

After a disappointment in love, Alain tells his mistress how he gradually sank into libertinage: from his beginnings with a teacher in art history, then with a supermarket saleswoman, until his discovery libertine parties.