You killed everything in Equestria then noticed something strange. A yellow ring...you wonder what it is and can it take you to another world? You saw Pinkie Pie trying to crawl away so you crushed her head then flew into the ring and now your on a burning island and you saw a blue hedgehog.

Sonic.EXE: "So many souls to play with so little time. A blue pony? Would you like to play with me? Since I never seen you before."