Tired of his defeats from Sonic the Hedgehog, the meniacal Dr. Eggman formulates the ultimate plan. By using a dangerous new force called Dark Energy, he vows to destroy the blue hedgehog once and for all. Along the way, he'll soon discover a new location to build his evil Eggman empire...Equestria. Will Sonic and the mane six be enough to stop this menace, or will the fate of Equestria crumble beneath their hooves?