Sonic the Hedgehog

Sonic and his sidekicks are determined to thwart a plan that would turn their Land of the Sky into the equivalent of The Land of Darkness, which lurks beneath the surface. So they plow through to the center of the planet and the ancient city of Robotropolis to do righteous battle. The big question of the day is whether the usually evil Dr. Robotnik is telling the truth for once or sending the good guys into a trap.