In the future city of Monsteropolis, the use of robot labour has helped civilization grow more than ever before. At the forefront of this technology is Dr. Light and his assistant Dr. Wily, who are commissioned to build six robots to handle a variety of specific tasks. They are named Bombman, Gutsman, Iceman, Cutman, Elecman, and Fireman in reference to their individual prime functions. Dr. Wily, however, has bigger plans and chooses to take control of the robots and let loose destruction in a bid for world control. Dr. Light fights back with the best tool he has, an experimental human-like robot, Rock aka Mega Man, who had been tested to perform cleaning duties. Now properly armed, it's up to Mega Man to take on the maverick robots, fight his way into Dr. Wily's castle, and end this madness.