A married couple's life has fallen into a rut, growing cold, dull, and utterly boring. The wife, Rina, longs to rebuild the bond she once shared with her husband, but this desire only deepens her inner torment. Into her life steps Kai, the man living next door, who appears like a demon and drugs her to sleep, then proceeds to assault and sexually abuse her, taking photos all the while. Threatened with the exposure of these images, Rina finds herself unable to resist and is forced to submit completely to Kai's demands. Possessing a narrow-minded and insidious nature, Kai treats Rina like a mere doll, steadily escalating his depraved demands. Under Kai's control, Rina's life begins to crumble completely.