In recent years, there have been many reports about secret organizations producing drugs and stimulants disguised as pharmaceutical companies. Nanami, an outstanding investigator of the country, was assigned to investigate this case. After a long period of time, she finally discovered the location of their production. To infiltrate deeper, Nanami disguised herself as a drug test volunteer and succeeded. However, the drug they gave her caused her to become dizzy and lose control of her body. During that time, she was sexually assaulted by the leader of the group without being able to resist. Upon waking up and returning, she accidentally found information about their entire operation stored on the leader's computer, and behind him, there was another mysterious figure. She determined to sneak back into their organization to steal information but unfortunately was discovered. It was then that she realized why she was always a step behind them, why they could always disappear mysteriously without a trace. And that was when the effects of the new aphrodisiac drug they produced began to take full effect, causing her to gradually lose her sanity, lose herself, and become a sex slave to them, like the other women they captured...