Female investigator Kana Momono infiltrates a prostitution ring alone, but falls into their aphrodisiac trap... She is subjected to various forms of sexual discipline by the ring members, including being played with with sex toys to reach orgasm, forced penetration, being forced to have sex while being given aphrodisiacs, and being raped by the group... Her self-esteem is shattered by the humiliation, and the intense sexual pleasure gradually erodes Kana Momono's self-esteem...