Iris Doriot, a beautiful 30-year-old Parisian, convinces a stranger to help fake her own kidnapping in order to leave her husband, Antoine, and start a new life. Max Lopez, a young mechanic in debt, agrees to the plot after fixing her car. Iris disappears from the street after lunch with her husband, a rich banker. Iris hides at an empty flat she is watching for a friend. Max ties her up and takes a photo to send to her husband, along with a request for 500,000 euros. Though told not to phone the police, Antoine does anyway, and they tap his phone and set up surveillance at the train station where Max told Antoine to bring the money. Though the police are not visible, Max hesitates and gets on the train instead of taking the money from Antoine, who stays on the platform as the police instructed.