Magazine editor Miyano Yukana conducts an undercover investigation into a suspicious religious cult. She finds herself surrounded by men who worship a deity they call "Tsujino Shin." Forced to drink "holy water," she loses consciousness. When Yukana awakens, she discovers a ritual dedicated to her submission is about to begin. One after another, sex toys assault her body, stripping away her thoughts and resistance as she is pulled into an inescapable whirlpool of pleasure. As her tormentors observe her transformation, her body and mind evolve into something entirely new.