Team Sonic, joined by Amy Rose, compete with the Rogues in several races. During the final race, Wave sabotages Sonic's board, allowing Jet to defeat Sonic and win the Grand Prix. Jet uses the Chaos Emeralds to make Babylon Garden appear, hoping to discover the legendary treasure of the Babylonians. Eggman steals the Key from Jet, intent on taking the treasure for himself, and heads for the garden, with Amy grabbing Eggman's ship in an attempt to stop him. Sonic grabs a new board and pursues Eggman, but Jet challenges him to another race, seeking to defeat Eggman first. The two arrive at Babylon Garden and find Eggman, who is holding Amy hostage. Combining their powers, Jet and Sonic manage to retrieve Amy and the Key.