 When the nefarious Doctor Robotnik turns up in the Land of the Sky, pleading to world-renowned hero Sonic the Hedgehog for help, Sonic is skeptical. Begrudgingly, he accepts Robotnik s mission to travel deep into the Land of Darkness, where Sonic discovers that trusting Robotnik is always a bad idea. Now Sonic, and his friends, Tails the Fox and Knuckles the Echidna, must face off against the mad Doctor s latest and most dangerous robotic creation.