Sonic has been living in this strange world for half his life,he finally finds out that the only ones that are his kind that are left in this world is, shadow the hedgehog, amy rose, diamond the hedgehog, emma the hedgehog, venus the hedgehog, becky the hedgehog, rex the hedgehog, silver the hedgehog, scrouge the hedgehog,miles tails prower, knuckles the ecidna, and rouge the bat.