Five schoolmates meet at weekends to celebrate graduation. They invite Franck, who is a newcomer to the group. Tennis, swimming pool, dinner on the terrace of the vast house of Clément's parents, the stay begins under nice and rather naughty auspices, when an inspector of the judicial police arrives the next day. He announces that Franck, who had left that morning, was the victim of an attempted murder. His damaged car was actually sabotaged and he is in a coma. Over the course of his interrogations of Clément, Erica and Sabine, he discovers little by little that the young man was not very appreciated and and discovers some naughty revelations.