After Save Sonic and Amy, Dr. Eggman and Fang the Sniper has discoveried a mystical space gem in StarShine Island, to have more trouble and stop her. But with the help of Tails and Knuckles they will stop Robotnik to destroy the world! But, to pass this challenge, they will confront Metal Sonic, Melvie, Fang and Jahn! It's a long adventure.
