Sonic's immortal enemy Mammoth Mogul is back and their battle has taken on a whole new twist. Can Sonic find out who or what Mogul is going after? With hordes of villains from today as well as from Sonic's past emerging to attack the blue blur, does Sonic have a chance of defeating the massive power of Mammoth Mogul?
Mammoth Mogul has set up a wealthy casino with Robotnik's lost bots and has now declared bounty on Sonic's... shoes? Ridiculously as it sounds, almost every baddie is out to get the Blue Blur, for money and personal reasons.