In the City of Water, Soleanna, lives Princess Elise. Elise is the keeper of a dark secret, the "Flames of Disaster", involving a mysterious jewel known as the Chaos Emerald. The evil Dr. Eggman learns of the Flames of Disaster and kidnaps the Princess. Once world-renowned hero Sonic the Hedgehog learns of this, he sets off to save the Princess and the Chaos Emerald, but his quest is interrupted by a strange white hedgehog from the future called Silver, who talks of the "Iblis Trigger," who, apparently, is Sonic himself. Sonic must save the princess, stop Dr. Eggman, and figure out what the mysterious Silver wants. Shadow will also be featured within the game, yet his role within the story is currently not yet available.