Sonic attempts a solo rescue to prevent prisoners from being robotisized and is hit by a Memory Scrambler that erases shortterm memory. Snively finds Sonic and brainwashes him into believing they are friends and that the Freedom Fighters are a subversive group which he infiltrated on Snively's behalf. He sends Sonic back to the Great Forest to get Knothole's coordinates and it works, but Sally and Uncle Chuck give Sonic a Power Ring which returns him to normal. Sonic gives Snively a dose of his own medicine and Snively attacks Robotnik, but quickly recovers after he's threatened. He then offers to lead Robotnik to "Knothole", but what he doesn't know is that Uncle Chuck has already changed his coordinates, so he and Robotnik end up in the Great Swamp.

Sonic is back on Planet Mobius, using his supersonic speedand teenage irreverence to thwart thecomedically despicable Dr. Robotnik. Sonic’sidolizing little buddy, Tails, tags along onevery fastaction, gagdriven adventure.