After the events of Dawn of Sonic & Knuckles, the hedgehog hero and his fox brother can finally relax on a planet that so conveniently comes into Mobius' orbit called Little Planet, and Longclaw gets to come. But they're not the only ones who are on Little Planet. Dr. Robotnik has become shorthanded and underpowered with the Hooligans quitting, regarding the events with the Chaotix. So, he invents the ultimate creation: a stronger, faster, more powerful robot that is exactly like Sonic only slightly better called Metal Sonic. Sonic gets separated from Tails and Longclaw in a battle with the metal faker, then was found by his #1 fan: Amy Rose, who surprisingly knows Longclaw and the owls! Now the two hedgehogs team up to stop Robotnik from taking over Little Planet by finding the mystical Time Stones and stopping terrible futures. Meanwhile, Tails and Longclaw are searching in every nook and cranny of Little Planet to find Sonic.
