Investigator Ayaka struggles to uncover the mastermind behind a series of disappearances. But captured by the Black Lion Society, she is thrown into days of relentless torture. Bound and violated, injected with illegal drugs, she suffers in the narrow space between despair and pleasure. Though her body was well-trained, she cannot withstand the endless waves of pleasure, climaxing again and again. Overpowered by ecstasy, she loses her reason and transforms into the ultimate sex monster. Witness this horrifying hell of pleasure with your own eyes.