Sonic, Shadow, and Silver got zapped by Tails' latest invention. However, when Tails and the others found out that the hedgehog trio had turned into toddlers! Not only they are toddlers, but they reveal that they are brothers! Confused and shocked by the truth, the gang must find a way to get their hedgehog friends back from another time or dimension. Until then, they soon learn and discover more about the three hedgehog... On the other, Eggman is up to no-good-plan of his...