A woman is suffering from severe postpartum psychosis and her husband takes her to a colonial mansion where they can spend the summer. The woman is however closed and isolated in a single room where her nervous depression gets worse with the time. The only thing she sees all day long is a yellow wallpaper which she studies in so many details that she finally finds a creeping woman behind the pattern. The summer is over and the family is about to go home. The husband opens the door to his wife's room. What he sees is however both unexpected and horrifying.
