Two months after the Resistance defeated the Eggman Empire, Infinite returns with the assistance of Neo Metal Sonic. With both villains in the possession of an Overclocked Phantom Ruby, they will stop at nothing to ensure the Resistance's demise. So now Sonic The Hedgehog must come back to the Resistance to stop these villainous duo, but with the help from Gadget The Wolf, the former rookie of the Resistance.