Shadow doesn't remember being bitten by anyone, but he certainly remembers dying- and living to tell about it. Thrown into the dark world of the undead, the macabre little hedgehog must now find a way to get back into the realm of the living!

Metal Sonic is beaten and peace returns to the world. But not for long. Now, the heroes must unite once more to defeat Eggman's new army and the mysterious Dark Rulers led by the evil Nazo

The planet Mobius has been consumed by war ever since the fall of the echidna race. The sudden arrival of aliens, known as humans, changed that. Their offer of immortality lead to the creation of Shadow, a hedgehog who would rock Mobius to its core.