The adventure begins as Sonic races to protect the world from bad guys old and new! In the aftermath of his latest battle with Dr. Eggman, rogue robots are on the loose and new foes are on the rise. But where is the evil doctor and what secrets will Sonic discover during his search? One thing’s for sure: he'll need plenty of help from Tails, Knuckles, Amy, and new allies Tangle the Lemur and Whisper the Wolf.
The mastermind behind the Metal Virus isn't done yet. Sonic writer extraordinaire Ian Flynn brings you the latest elaborate scheme from the Blue Blur's newest nemesis! Dr. Starline is back to his evil antics! But to enact his latest scheme, he'll have to get into an abandoned Eggman base, past an army of badniks! And to do that, he'll need the help of some of Sonic's greatest enemies! Zavok, Mimic, Rough, and Tumble are back and badder than ever! Starline's promised them incredible power, so Sonic and friends had better watch out. That is, if the not-so-good doctor can get these Bad Guys to stop fighting each other and work together.