Redemption is something anyone can struggle with, especially Metal Sonic, now calling himself Onyx, which is what no one, even Sonic himself, never expected to see. But as costly as being a villain is, being a hero can be just as costly, and leave open doors for evil to enter. Can Onyx bare the struggles and claw his way to becoming more then just Eggman's creation? Or will the evils of Mobius drop him back to being a villain?