Ghislain and his sister Aurore will receive a large inheritance from their recently deceased uncle Edouard only if they can prove their moral rectitude. But the nephew has a mistress, and the niece is a bit of a nymphomaniac. The behavior of the chauffeur, with the maid, tempts their employers into further indiscretions.

Manuella is a young and rich heiress married to Jean-Pierre. The latter is the director of the company owned by his wife, who merely signs contracts and invoices. Manuella suffers from a trauma that dates back to adolescence, when she witnessed the rape and then the murder of her older sister Nathalie by a simple-minded man. A shock she never recovered, which leads regularly to depression, even violent crises requiring treatment that administers her husband through bites. In order to change his ideas, Jean-Pierre takes his wife to winter sports, in Haute-Savoie where he rented a chalet. He meets his mistress Françoise, accompanied by her Patrick, his friend, who is aware of the liaison of his girlfriend with Jean-Pierre. In fact, the latter, with the help of Françoise, plans to sink Manuella into irreversible madness, in order to seize his property.

American Raphael talks his colleague at the Parisian University into spending his summer at the family's country mansion. But once there Raphael seduces and plays the sisters and mother against each other - until everyone is revealed at their very worst. As it turns out - that was Raphael's intention all along - because his own torrid past is deeply rooted in their family's dirty history.

A journalist working with an economics magazine that has fallen on hard times decides to boost sales by doing an article about an award ceremony to honor the best female writer of an erotic novel. His research takes him into the intimate lives of three of the contestants, and he is delighted to find that their sensual abilities extend further than just writing about it. He is willingly seduced by all three and has the exhausting but erotic job of comparing their amorous appetite in his report. His girlfriend has been secretly observing all of this, and is decidedly jealous...But she has a plan to surprise him. It all come to a head at the award banquet, when, in a shocking surprise, an amateur wins first prize, a writer who just happens to be his girlfriend who has written a book about his exploits!

Sandra’s twin sister is dead. Both sisters were not in touch for quite a long time; mainly because they were so different: to make it simple, Sandra was the Good girl, and her sister the Bad one. Now the dead sister invites Sandra to have a taste of what her supposedly easy way of life was really like. She sends her the keys of her flat, warning her that many other people have these keys as well. That’s the beginning of the story. And normally in most porn stories you would expect Sandra to become as depraved as her sister but indeed in this movie Sandra’s behaviour becomes more and more ambiguous. What is happening to her?