The massive drug trafficking organization "Kokujikai" continues to expand its influence across wide areas, and a series of incidents involving undercover agents disappearing one after another has become increasingly frequent. Elite investigator Saya, driven by rage and despair after her comrades become victims, infiltrates the Kokujikai's hideout based on intelligence gathered from her allies—only to realize too late that it was a perfectly orchestrated trap. In that instant, ensnared by the vast criminal network, Saya is captured by the Kokujikai. Her fate now hangs in the balance, and how she responds to this dire situation will determine the course of what follows.