Kaori Inami is a member of the Special Investigation Department's Intelligence Division. She is a brilliant woman who earned her doctorate in criminal psychology from a famous American university. She becomes a secret agent who hides her identity and conducts undercover investigations. This noble woman is then tortured by vicious beasts. She desperately resists, trying not to let them touch her, but she writhes in agony, torn between humiliation and shame. The pleasure torture sends her body into a whirlpool of frenzy, bringing her to tremendous climaxes over and over again. In the end, she is transformed into a lustful beast.