Carmen, a young Spanish woman who is engaged to be married, has her hen night at a French restaurant in London. She is invited to participate in the observance of an old custom which allows her to kiss the stranger of her choice before the marriage, symbolically "kissing her single life goodbye" and bringing luck for the future. The man she chooses is Kit and both enjoy the kiss far more than they have intended. They fall in love, which creates a "love triangle" among Carmen, her fiancé Barnaby, and Kit.
High school teacher and writer Frannie Avery meets a student at a local bar, and when she heads to the bathroom sees a woman performing oral sex on a man. A few days later, Detective Giovanni Malloy questions her as he investigates the gruesome murder of a young woman, whose severed limb was found in her garden. They flirt despite the grisly nature of their introduction, and meet at the same bar later. Frannie is alternately thrilled and frightened by the detective's sexual aggressiveness, even as she grows more disillusioned with the attitudes and crude behavior of other men, including the detective's partner, Richard Rodriguez. Even as Malloy defends his partner, who can no longer carry a gun because he threatened his unfaithful wife, he promises he will do anything she wants except hit her. She leaves abruptly and is assaulted walking home, but calls Malloy and their affair begins that night.
Sarah Morton, a middle-aged English mystery author, who has written a successful series of novels featuring a single detective, is having writer's block that is impeding her next book. Sarah's publisher, John Bosload, offers her his country house near Lacoste, France for some rest and relaxation. After becoming comfortable with the run of the house, Sarah's quietude is disrupted by a young woman claiming to be the publisher's daughter, Julie. She shows up one night claiming to be taking time off from work herself. She also claims that her mother used to be Bosload's mistress, but that he would not leave his family.
Mercenary thief Laure Ash (Rebecca Romijn) participates in a diamond heist in Cannes. The plan is for Laure to steal valuable diamonds from the ensemble of a female attendant named Veronica (Rie Rasmussen) while in the middle of seducing her, during which her accomplices "Black Tie" (Eriq Ebouaney) and Racine (Édouard Montrouge) provide various support. However, Laure instead double-crosses her accomplices and escapes to Paris with the diamonds. In Paris, a series of events causes Laure to be mistaken for her own doppelgänger, a missing Parisian woman named "Lily" (also portrayed by Romijn) who had recently disappeared. While Laure luxuriates in a tub in Lily's home, the real Lily returns and commits suicide while Laure secretly watches, providing Laure the opportunity to take her identity for good, and she leaves the country for America.
Diane de Monx (Nielsen) is an executive trying to negotiate a deal to acquire the rights to the productions of a Japanese anime studio, which will soon include three-dimensional hentai, for the Volf Corporation. To facilitate the acquisition, she eliminates her superior, Karen (Dominique Reymond), and assumes control of her portfolio, her business partner Hervé (Berling), and her assistant Elise (Sevigny). Elise, however, despises Diane and works to frustrate her negotiations at every opportunity. Diane and Hervé travel to Japan to close the deal, and they enjoy a sexual flirtation which is unfulfilled at that time and seem to grow to like one another.
A voice over describes how the brain begins to shut down at an altitude of 20,000 feet, the human body unable to survive at such heights. A mountaineering group is shown climbing a cliff face in the snow, until an avalanche causes the rigging to break and they fall to their deaths.
Frank (Simm), a librarian in the United Kingdom, falls in love with a mysterious American dancer named Miranda (Ricci). Frank is complex and appears naive. However, his character is a complex as Miranda. There are graphic scenes of sex and seduction, which is not gratuitous, but depicts Frank's fantasy and unrealistic love for Miranda. She suddenly disappears, and he tracks her down in London, finding out that she is actually a con artist. He leaves her, returning to Northern England.
Edward (Richard Gere) and Connie Sumner (Diane Lane) are a married couple living in a suburban New York City with their eight-year-old son, Charlie (Erik Per Sullivan). Their relationship is loving but lacking intimacy due to their schedules.
Le corps sans vie de Lily Sampson, un mannequin connu, est retrouvé par la police dans une douche. Clark et Fabrice, les deux enquêteurs chargés de l'affaire, commencent par fouiller dans le passé de la victime. A leur plus grande surprise, ils découvrent une cassette vidéo troublante. Ils y voient la belle pratiquer des jeux d'adulte avec un photographe de renom. Les deux hommes ne doivent pas se laisser guider par leurs sentiments et garder leur sang-froid pour retrouver le coupable. En effet, leur enquête est jalonnée d'obstacles et de tentations érotiques auxquelles ils doivent résister. Ils suspectent naturellement l'homme aperçu sur la cassette.
Original Sin is set in the late 19th century Cuba during the Spanish rule, and flashes back and forth from the scene of a woman awaiting her execution by garrote while telling her story to a priest, to the actual events of that story.
Erika Kohut is a piano professor at a Vienna music conservatory. Although already in her forties, she still lives in an apartment with her domineering mother; her father is a long-standing resident in a psychiatric asylum.
Detective Black (Elliott) conducts a procedural interrogation on Albert Straka (Kennedy), a quiet and unassuming man who is a suspect in the brutal and violent murder of Frank (Cavalieri), a drug and sex addict who owns a nightclub. He gets Albert to admit that he had strong feelings towards Frank's wife, Sarah (Elizabeth), but that she was into far too kinky sex for him to ever fall in love with. As the interrogation continues, it is revealed that the sordid sexual relationship among the three grew increasingly bizarre.
Alan and Wendy Barnet are stuck in a marital rut and decide to answer an ad they find in a Swinging magazine. The couple meets with Jack and Louise Bauer at the Zebra Lounge. The Bauers are a pair of experienced swingers who help the Barnets fulfill their sexual fantasies. However, Alan and Wendy soon realize that the Bauers are not who they seem to be.