Former department chief Oshima now works part-time as a house cleaner. One day, while doing door-to-door sales, he finds himself at the home of a former subordinate. Discovering that the man is married to the beautiful Shizuko, Oshima is consumed by jealousy, sinking into twisted fantasies that he could have seduced her if only he hadn't left the company. Frequenting a local shop, he's introduced to a powerful aphrodisiac drug, and is astonished by its intense effects. He devises a deranged plan to use the drug to control Shizuko and sneaks into her home. Helpless as her body is manipulated against her will, Shizuko is forced to obey lewd commands. The story unfolds into an abnormal relationship fueled by distorted love and desire.