This story begins after a long forgotten history that brought humans and animals together. A young hedgehog named Sonic runs freely in his home, South Island. But his home is under attack by an evil mad scientist named Dr. Robotnik turning small animals into robots. Sonic is the only hero who could stop this madman. Along the way he meets a lonely two-tailed fox, Tails, and a group of freedom fighters led by Princess Sally, daughter of King Acorn. Sonic's speed and free-spirit inspires them to stand up to an unstoppable dictator and free their animal friends.