Set in Soleanna, the beautiful city of water. In his first adventure set in the human world, Sonic meets a beautiful princess named Elise, whom he quickly befriends, but Princess Elise is abducted by none other than the calculating Dr. Eggman who is working under dark and sinister motives,to destroy this special kingdom of hers. In order to restore safety and serenity, Sonic must maneuver his way through a series of adventures and challenges where he will encounter and interact with a bevy of allies and enemies, and ultimately go head to head against the menacing doctor to thwart his malicious plans. Along the way, Sonic encounters a mysterious character named Silver. Blocking him with unique supernatural powers, even the Blue dude with 'tude will find it difficult to out-maneuver the enigmatic Silver! As Sonic speeds through the huge kingdom, the mysteries unravel.