The male and female pleasure war resumes! The Female Torture Research Institute, led by the revived Tsujimaru, incorporates new sex toys and torture methods to practice new cruel methods. Megumi Asuka, an investigator belonging to NSI (National Security Investigation Bureau), learns that her friend Tachioka Tomomi has fallen into the hands of the Female Research Institute and begins a solo investigation. Known as 'Demon Megumi' and 'Man-Eater,' the sex fiend Megumi is bound to be targeted by the Female Research Institute.
