It's Mega Man versus the powerful leaders and fighting forces of Monsteropolis - that strange multi-layered land of robot-like Humanoids created by the wrongly-performed experiments with human beings by Dr. Wily.
Mega Man - the chosen defender of the human race. For he dares to single-handedly penetrate Monsteropolis' seven seperate societies to stop the rapid expansion of strange misrepresentations of humans.
Mega Man's goal is monumental. He must infiltrate seven seperate heavily-guarded empires. By himself, he must break-down and destroy the followers of empire leaders; Cutman, Gutsman, Iceman, Bombman, Fireman, Elecman and Dr. Wily.
The action involves Mega Man armed only with laser beam weapons, encountering strangely-configured Humanoids. They're atop, in and out of fortified prison-like structures strenghtened with thick walls. Below icefields. Hidden amid gun turrets imbedded in concrete uprights, even in subterranean passages under icefields. WOW!