One evening, in a luxurious building in the centre of Paris, an armed woman bursts into the apartment of Adriano Rizzo, an actor who exploits his status to abuse young actresses. Later, the mysterious woman reveals her identity: Hélène de Saint-Amand, owner of the apartment. She intends to kill him to put an end to his sexual assaults.
Over the course of a week, sisters Inger and Ellen find their relationship challenged on a highly anticipated coach trip to Paris. Inger reveals her struggles with schizophrenia to the group, receiving both pity and discrimination. On arrival, it soon becomes clear that Inger has a hidden agenda concerning a figure from her past, ultimately involving the entire group in her hunt for answers.