Elite investigator Ruisa Totsuki, consumed by anger and frustration as her colleagues are one by one caught up in a string of missing narcotics officers cases, learns from an informant that the Black Lion Society is involved. She decides to go undercover alone, but falls into their trap and loses consciousness before the illegal drugs she's been pursuing. Her toned, beautiful body is restrained, unable to move, and subjected to humiliating pleasure training. Her body, forcibly awakened to lust, succumbs to pleasure against her will, transforming into a wanton sex slave! Waves of ecstasy repeatedly assault Ruisa Totsuki's sensitive body! She struggles desperately to resist, but pleasure begets pleasure, plunging her into an endless hell of ecstasy. In a state of panic, she keeps climaxing uncontrollably. What will become of elite investigator Ruisa Totsuki?!