Scar Ship, a fearsome Metarex battleship capable of demolishing entire fleets of resistance fighters, is called upon by Dark Oak.   Its new mission: destroy Sonic the Hedgehog and Dr. Eggman. Scar Ship begins by launching a suprise attack on Eggman’s ship. Despite Shadow's best efforts, it appears all hope is lost for Eggman and his crew. Rouge manages to escape, and soon informs Sonic and the gang of what has happened. Cosmo recognizes the ship: it is the same one that destroyed her family and friends! The gang decides to take on the ship in a battle royale! But it will take some cunning trickery, and some unexpected help, to take it down!