While the city recovers from the shock of a brutal massacre at the football stadium, young Sam O'Connor struggles with the realization that his father has been turned into an unwilling cyber-junkie. Hazama and Sachiko try to break the ex-football player of a dependency on cybomechamine. Yet the question still remains, will there be anything's sanity once the drug wears off.

Making matters worse, is the fact that Hazama must struggle with his own demons. His cyborg body holds trace memories of Azuma-san - the original 8 Man. Add to this, the agony which accompanies the senseless murder of his sister by Tony Gleck, and this latest incarnation of the cyborg super cop finds himself suffering from serious emotional trauma.

His first response to this uncontrollable sensory overload is to run amok. As a programmed crimefighter, Hazama should use his abilities for good. But the bitter reality of 8 Man's precarious grasp on his own self-control, as evidenced by his participation in the stadium massacre, could snap once again ... without warning! The trick is for 8 Man to take care of Mr. Hallowe'en before the pressures of the job turn him into a berserk homicidal maniac.