A married woman, Haruna Saeki, wife of the heir to a major trading company. As the daughter of a corporate president, she had enjoyed a seemingly perfect married life. But one day, her world suddenly collapses. Her husband had amassed enormous debts—and used his wife's body as collateral. Powerless, Haruna is sold to a grotesque pleasure mansion known as "Inkaku," where the dark, lustful desires of greedy men converge. Her body becomes the stage upon which their depraved pleasures unfold in an endless scroll of erotic torment.