Biology professor Jennifer (Pierre Brasseur) has ruined the face of her beloved daughter Christine (Edith Scob) due to a car accident. After recovering from injury, her daughter can only wear a beautiful white mask all day, which is very painful. Jenny Hill, who loves her daughter eagerly and feels guilty, and her assistant Louise (Alida Valli Alida Valle) disguise the illusion of Christine's disappearance and death, secretly abduct a woman of the same age as her daughter, peel her face after anesthesia and transplant it into Christine's face. However, operations have failed one after another, and the number of victims has been increasing. Christine was miserable when she saw with her own eyes that many girls of her age had been killed. On the other hand, many cases of missing girls also attracted the attention of the police, who gradually locked their targets on the crazy Janisel.