P... comme pénétration (1976)

Michel and Gérard are two pilots who are based in Africa and stay at the same resort. Gérard hires a local prostitute called The Black Pearl as his live-in mistress while Michel has a love affair with Léna, another guest at the resort. Although Léna is of the raunchy type, Michel is extremely reserved, sexually neglecting her. Michel introduces Léna to his colleague and after a trip up river to take photographs, Gérard and Léna drive Michel to the airport. Gérard touches her up on the way back and they break off the drive to have sex on the beach. Later Gérard arranges a threesome with Léna and his mistress by giving her extra money. Five days later Michel returns and he seems to have changed his mind, fantasizing about having sex with Léna. However, he cannot find her - she has gone to a swingers' club with Gérard and his mistress. An orgy develops there and Léna is reluctant to join in at first, but then does, though she is thinking of romantic times with Michel as she has sex with various partners among the tangle of bodies. Meanwhile Michel is searching high and low for her (even confusing another female tourist for her), but they meet when she breaks away from the orgy and leaves the club, walking off up the road.