After Sonic the Hedgehog and his allies defeated Dr. Eggman and liberated the world from his Eggman Empire during the Eggman War, the evil doctor went missing. However, his Badniks remained. Initially directionless, these robots eventually began launching coordinated attacks on villages, suggesting that someone had taken control of them. Sonic thus begins traveling from town to town to stop the Badniks, receiving help from both old friends and new allies along the way.
