In a cruel society where young women are sold to the highest bidder, a masochistic assistant works under the sadistic Shirohebi to prepare new arrivals for auction. Among the captives are a woman seeking revenge and Umi, who is selling herself to pay off her fiancé's debts. When Shirohebi conducts a rigorous virginity examination to determine their market value, Umi's lies are exposed, leading to a brutal punishment that highlights the ruthless nature of the trade.