While fighting Dr. Eggman, Sonic accidentally uses the time-space warping properties of the Chaos Emeralds to teleport them to the world of Equestira. Finding himself trapped in a new world, Sonic has to rely on the power of friendship and harmony to help him regain the seven Chaos Emeralds and return to his own in a world spanning adventure!

Inspired by Sonic the Hedgehog comic 229, The picture Sonic in ponyville by ss2Sonic, and Harmony�s Wrath by haha time for ponies. Stand Alone Squeal to Harmony's Wrath