Reiko (Kanno), heiress to the once-powerful Kurusuin family, was nearing her wedding when Takeshi Kinosaki, a member of a decadent wealthy circle called the Anal Mania Club, sexually assaulted and humiliated her. The attack cost Reiko her engagement and triggered the collapse of her family. Reduced to working at a sensual massage parlor, she continued waiting for a chance at revenge. Later, Kinosaki's cherished adult only daughter Ayaka (Hazuki) becomes engaged to the heir of a former financial dynasty. The news causes a public sensation and reaches Reiko as well. At last, her chance has arrived.