The series follows Aki Light, an advanced robot who looks like and lives the routine of a human schoolboy. He was built by scientist Dr. Light as his son and lives with his biologically human sister Suna Light. They reside in Silicon City, a town co-inhabited by robots and humans rather peacefully, though is currently seeing new attacks from rogue robots (the Robot Masters of the franchise). Aki responds by transforming into "Mega Man" and battles to neutralize the threat and protect the civilians from harm. Allies to Mega Man include Mega Mini, a wise-cracking miniature robot who operates within his forehead, his pet Rush the robot dog, and Suna Light.