Amoeba Music

The world needed a hero -- it got a hedgehog. Powered with incredible speed, Sonic embraces his new home on Earth -- until he accidentally knocks out the power grid, sparking the attention of uncool evil genius Dr. Robotnik. Now, it's supervillain vs. supersonic in an all-out race across the globe to stop Robotnik from using Sonic's unique power to achieve world domination.

 

And then later in part 2, after settling in Green Hills, Sonic is eager to prove that he has what it takes to be a true hero. His test comes when Dr. Robotnik returns with a new partner, Knuckles, in search of a mystical emerald that has the power to destroy civilizations. Sonic teams up with his own sidekick, Tails, and together they embark on a globe-trotting journey to find the emerald before it falls into the wrong hands.