Airi loved her boyfriend, but he had grown tired of her and wanted to break up. When he told her, "If you give me more new excitement, I won't leave you," she was persuaded to follow him to an underground club for male masochists. The place was filled with perverts, and she was told, "Let yourself be defiled by these freaks." Reluctantly, Airi endured continuous abuse. However, through the torment, her inner aggressive woman began to awaken, and she gradually transformed into a dominant sadist.