The Female Body Torture Research Institute aims to delve deep, ever deeper into the female body, bringing women to climax relentlessly—no matter how they cry or scream—and forcing them to submit completely. As the institute reaffirms its very purpose, it enters full-scale war against the female detective. Detective "Chihiro" refuses to succumb, angered by the idea that mere arousal makes one no different from an animal, challenging the very pride of being human. Yet, despite her title as a detective, beneath the surface she is just a woman—and the institute's relentless passion now ignites a new confrontation. Unleashing more intense torment than ever before, the institute pushes its mission to even greater depths.