On their way to the mysterious Starfall Islands, Sonic the Hedgehog and Miles "Tails" Prower first have to pick up their friend, Amy Rose. Too bad Amy's in the middle of a brawl with Dr. Eggman's badniks! What’s Eggman doing here and why is he acting strangely? These are just the first mysteries in this exclusive prologue to the game, Sonic Frontiers!