One morning, Marianne announces to Paul that she is leaving him for a certain Matthew. Paul is ready to accept the separation, but not Laura, the girlfriend of Matthew, who arrives at his house and asks him to help her take revenge on the infidels. Her plan is very simple: She and Paul will pretend to have fallen desperately in love with each other, thus, inciting jealousy from their adulterous halves. Paul, at first reluctant, eventually joins Laura in her game. Will Marianne and Matthew fall into the trap?