Dan Gillis, an American screenwriter based in Paris, recently abandoned by his wife and adjusting to life as a bachelor while attempting to care for his son, Danny, is commissioned to create a script. The invitation comes from Legrand, a successful producer with whom he has previously collaborated, but this time he is invited to collaborate on an offbeat narrative with Malcolm, a young and unknown film director. Dan is unsure about the offer, seeing it as a departure from the type of work he has grown accustomed to, but Legrand's persistence and the young director's fascinating personality persuade him to accept the job, despite Marilyn's reluctance. Dan soon realizes that there is more at risk than simply a film when he begins to work. His life will alter forever as he becomes immersed in the restricted environment of incestuous ties that surrounds Malcolm and his stunning young sister Jenny, with whom Dan quickly falls fascinated.