In recent years, there have been many reports about some organizations secretly manufacturing drugs and stimulants under the guise of pharmaceutical companies. Nanami is an elite investigator of the country who was assigned to investigate this case. After a long time, she finally found out where they were produced. To penetrate deeper, Nanami impersonated a drug testing volunteer and succeeded. But the medicine they gave her made her dizzy and unable to control her body. During that time, she was sexually assaulted by their boss and could not fight back. After waking up and returning, she accidentally discovered information about all the activities saved on the boss's computer and behind him there was another mysterious character. She determined to sneak into their organization again to steal information but unfortunately was discovered. And now she knows why she is always slower than them, why they can always mysteriously disappear without leaving any trace. And that was also the time when the effect of the newly produced aphrodisiac drug they had just produced was most effective, causing her to gradually lose her reason, lose herself and become a sex slave of them, like other people. Another woman was captured by them...