Reina, a secret agent who is still inexperienced and frustrated by the failure of previous orders, receives a new order. A clue to uncover the true nature of an organization that is expanding its influence with illegal drugs has been found, and she has been entrusted with an undercover investigation. Reina, who cannot afford to fail any more, infiltrates the evil organization with the help of her boss, Kenzaki. She finally gets hold of evidence, but is captured just before she can get there. Yes... this was Kenzaki's trap! Reina's reason gradually breaks down and her body starts to ache due to the special aphrodisiac oil, and as she is repeatedly creampied and made to cum by the men of the organization, she is reduced to an extremely lewd human toilet...