Louise is a boarding school student in the midst of a passionate affair with the husband of her headmistress, Veronica . Jealousy and rage hang in the air of the isolated school until Matthew suddenly disappears. Fearing the worst, Louise struggles to uncover what has happened to her lover, but is foiled at every turn by Veronica, who seems to take a sadistic glee in a psychological torment she inflicts upon her. When a mysterious woman appears at the school, Louise is convinced that she is to be the next victim. Haunted by nightmares, both real and imagined, Louise must keep herself alive long enough to uncover the truth of Matthew's disappearances.