To apprehend a drug trafficking organization, narcotics agent Arisa Yuuki returns abruptly from overseas. Never suspecting that a trusted ally is the traitor, her investigation spirals into endless torment. Captured by the enemy, she faces relentless and sadistic pleasure torture at the hands of men who expertly exploit a woman's vulnerability. As wave after wave of orgasm engulfs her, day after day, Arisa Yuuki is reborn as nothing more than a helpless female beast.