Twenty-three years after the original "Sonic The Hedgehog" video game, fast, handsome, and arrogant hero Sonic The Hedgehog continues to fight his archnemesis, Dr. Eggman, aided by Tails, Knuckles, Amy, and a new recruit named Sticks. Sonic and his friends also go on all-new adventures, such as going to a robot city in the sky and having an underwater battle with Eggman.