Nana Maeno, a young girl, wanders the streets searching for her missing friend who was kidnapped by the Black Lion Society. Acting on information received from her ally, she heads alone to the suspected location—only to fall into the organization's trap. Unaware that the place is their hideout, she drinks a beverage laced with an aphrodisiac, gradually losing control of her body. Subjected to intense pleasure torture while helpless, she struggles desperately to resist as her body and mind slowly succumb. Will she withstand the most extreme pleasure training in history? Her true self is about to be revealed.