In recent years, there have been many reports about a few secret organizations manufacturing drugs and stimulants under the guise of pharmaceutical companies. Nanami is an elite investigator of the country who has been assigned to investigate this case. After a long time, she finally discovered their production location. To infiltrate deeper, Nanami disguised herself as a drug trial volunteer and succeeded. However, the drug they administered made her dizzy, rendering her unable to control her body. During that time, she was sexually assaulted by their leader and unable to fight back. After waking up and returning, she accidentally discovered information about the entire operation saved on the leader's computer, and behind him, there was another mysterious figure. She is determined to sneak into their organization again to steal information but unfortunately, she has been discovered. And now she knew why she was always slower than them, why they could always mysteriously disappear without leaving a trace. And that's when the effect of the aphrodisiac they had just produced was at its maximum, causing her to gradually lose her reason, lose herself and become a sex slave to them, like the other women they captured...