Dr. Eggman hires an intern who turns out to be a bit unstable. He commandeers Eggman's doomsday device and is going to set it off! Not to be outdone, Eggman begins building a competing doomsday device. Sonic and Tails step in to avoid disaster./ Eggman turns Amy, Sticks, Tails, and Knuckles into evil clones of himself. Sonic must figure out how to restore them even as they attack him.