Yuuto Lenix, a former investigator for the Drug Enforcement Agency, is falsely accused of murdering his partner and sentenced to life in prison. Before beginning his sentence, an FBI agent offers him a deal: if he can locate a specific criminal, a terrorist cult leader, hiding within Schelger Prison, he will be granted an early release. Yuuto accepts this undercover assignment, hoping to prove his innocence and regain his freedom. Upon his arrival at Schelger Prison, he meets his new cellmate, Dick Burnford, who is less than welcoming.
