The nefarious Dr. Dino, a fearsome Tyrannosaurus Rex that spent eras trapped in ice hundreds of miles beneath ground level and gained massive scientific intelligence through exposure to radiation from the planet's core, is hard at work with his evil scheme in his secret lab at the center of the Earth. He knows his people are long extinct, but he plans to undo that: he's installing a heat-powered, super-strong revolution motor in the center of the planet. When he finally switches it on, it will force the Earth's rotation to stop and reverse direction, thereby rewinding time to the Cretaceous period where the dinosaurs reigned supreme! Mwahahaha...