The Female Torture Research Institute will live forever... Director Tsujimaru's terrible grudge turns into a fiery rage, attacking the body of Tachibana Mako (Himekawa Soke Kunoichi), a senior executive at the Central Secret Intelligence Agency. She fights desperately to control her own body, but the shame and humiliation push her to her limits, bringing out the incubus within her. She is turned into a monster of pleasure, screaming and climaxing over and over again. Will Mako be able to regain her sense of self? Or will she fall completely?