Miles Prower, better known by his nickname Tails, has set up a vacation spot on the small uninhabited island known as Cocoa Island, just a short distance away from his main home on West Side Island. While napping one day, a sudden explosion awakens the young fox and he is told by the local Flicky birds that the island is under attack by the fearsome Battle Kukku Army! Their leader, the Great Battle Kukku 15th, has learned that the mystical Chaos Emeralds have suddenly appeared on Cocoa Island after they were found by a speedy blue hedgehog on South Island.
Though only eight years old, Tails is already a gifted mechanic and is very intelligent for his age. Despite being unaware of the circumstances around him, the young fox is determined to protect the Island and defeat the Kukku Army, but is he up to the task?
Featuring the official voice clips of William Corkery (Sonic Heroes) as Tails.