Sonic the Hedgehog, Tails the Fox, and Knuckles the Echidna travel to planet Earth after Eggman's robots attack their planet. They make friends with humans - Tom and Maddie Wachowski. They are trying to help the aliens defeat their main enemy - Dr. Ivo Robotnik, who with the help of his technology wants to take over the whole world and create one huge country called "EggmanLand".