Shimotsuki Runa plays an elite narcotics investigator enraged by the disappearance of her fellow agents. Acting on an informant's tip, she enters the Black Lion Society alone, only to discover that the entire lead was a trap. Bound and unable to move, she is molested, injected with the very illegal drugs she was investigating, and subjected to humiliating forced-pleasure torture. Powerful aphrodisiacs and high-speed electric thrusting break down her reason, leaving her dazed, drooling, and climaxing continuously. She fights to preserve her pride, but wave after wave of unwanted pleasure sends the investigator into panic as her fate remains uncertain.