Our story begins with the nefarious Dr. Eggman, who has discovered an ancient being known as Chaos and wants to use this monster's power to establish his own empire. Prior to setting his plans into motion, Eggman sets about activating a new series of battle robots from his E-100 series. After all, a good crew is needed on the doc's brand new warship, the Egg Carrier...
Soon after, Eggman makes his move at Angel Island. The island's guardian, Knuckles the Echidna, is taking a short nap when the evil Eggman shatters the Master Emerald and frees Chaos. With the emerald destroyed and shards scattered about, the island falls into the sea. With Chaos unleashed, it's only a matter of time before the world is under Eggman's control, that is unless a certain blue hedgehog has something to say about it...