: In Soleanna, the City of Water, lives Princess Elise. Elise is the keeper of a dark secret, the "Flames of Disaster", which involves the mysterious jewel known as the Chaos Emerald. The evil Dr. Eggman learns of the Flames of Disaster and kidnaps the Princess. When the world-renowned hero, Sonic the Hedgehog, learns of this, he sets off to defeat Dr. Eggman once again, save Elise, and get back the Chaos Emerald. However, Sonic's quest is soon interrupted by a strange white hedgehog, called Silver the Hedgehog, who talks of Sonic becoming the "Iblis Trigger" during his journey.  In the future from which Silver hails, the "Iblis Trigger" is responsible for causing numerous deaths. Sonic must discover what the mysterious Silver wants and make sure that Silver does not interfere with his quest.
Shadow the Hedgehog will also be featured in the game, but his role in the story is currently largely unknown other than that he will be encountering a "mysterious" fourth hedgehog...
Yet again, I'm loving the music in Sonic's franchise.... &)