The dangerous drug PX stimulates human destructive impulses and aggressive instincts, and a shadowy secret society called PRIMEX is manufacturing and distributing it illegally. One of its key members, Kazama, has been handling PX distribution but has now completely vanished. Cases linked to PX continue to surge, drawing the attention of the Narcotics Control Division's First Investigation Unit. A tip reveals that the chairman of a certain academy is connected to PRIMEX and using PX for human trafficking. Investigator Remi Hoshisaki goes undercover as a temporary teacher to uncover the truth, but her mission is quickly exposed. She is captured by the organization's members and subjected to brutal assault.