A long time ago, long before Sonic met everyone, a prophecy was foretold that a master of evil would awaken and destroy a single royal hedgehog family to conquer the planet Mobius but one of the family would rise against this evil with his incredible powers and free will. Separated from birth, a lonely brown slow hedgehog meets a friendly doctor who invents robots, studies his grandfather's work, and tampers with Chaos energy. The two of them became good friends until a freak chaos accident changed their lives forever.