Paul and Hélène, a wealthy Parisian couple, are preparing to go out for the evening. While driving, they see three men chasing a prostitute down the street. She begs them to save her by letting her into the car, but Paul locks the doors and drives away as the three men savagely beat her, leaving her unconscious in the street. He refuses to let Hélène phone an ambulance, afraid of being charged with not helping a person in danger (which is a crime in France).