After the recent disappearance of 8 Man, the mysterious cyborg superhero created by Professor Tani, the city is rocked by terrorist assaults from murderous, drug‑crazed street gangs. Hazuma, an ex‑cop who now runs his own detective agency, is hired to locate a missing scientist rumored to have stolen cybernetics from Professor Tani’s laboratory. The stolen hardware reappears as psycho‑activated weapons grafted onto the bodies of rogue “cyper‑junkies.” During his investigation, Hazuma is brutally murdered. Dr. Tani uses Hazuma as a bio‑template to replace the missing 8 Man. To cover this, 8 Man keeps the original detective persona, yet must wrestle with the duality of a cynical private eye and…