Sonic is on a world-shattering adventure, as he tries to save his friends Tails, Amy, Knuckles, Rouge and Big from a catastrophic event he caused after a fight with Dr. Eggman. Sonic and his friends are currently looking for a mysterious object known as the Paradox Prism. However once he finds it, he accidentally breaks it and he teleports to a multiverse, facing doppelgängers that are not the ones he once knew such as Nine, Rusty, Dread, Prim, etc. Now, Sonic needs your help.