Two dinners are held simultaneously. Agathe invites three friends, Sandrine, Jennifer and Lise. Meanwhile, Jean-Philippe receives Bertrand, Seb and Franck. The two groups know each other, some are in a relationship, and each dinner participant talks about his/her sexual experiences from his/her point of view. The views of men and women are often paralleled. Many pornographic flashbacks illustrate their words. From the outset, Jennifer announces that she has just made love in a car with an ex, Simon who was accompanying her. Lise is scandalized by what she considers as exhibitionism, and bounces on a statistic that she finds little credible: a magazine announces that there are 400 000 swingers in France. And she tells their foursome adventure that went wrong with her husband Bertrand and a couple, Elisa and Clément from the internet. Jean-Philippe has prepared a meal massalé for his guests, but he is concerned because his girlfriend Caroline does not stop calling him but he lies to her telling him he will not be free of the week. He soon confesses to the group that he is no longer in love with her. In reality, he fantasizes about her mother, Agatha. Seb, meanwhile, boasts of his many shots of a night but his friends know he does not really satisfy his partners. Lise tells their trying anal sex with Franck.