After coming home for Equestria Tails was able to make a smaller version of the device that Eggman used to get to Equestria, Sonic once again see Rainbow Dash and her friends, but not long after Sonic's return, a hedgehog by the name of Ice, shows up claming to be a an old friend of Sonic's, just who really is this 'Ice' person and how does he know Sonic and why is a pure black hedgehog tring to kill Ice?