The year is 3017. The powerful, shape-shifting Menosuars are watching Earth from their home planet, Prehistoria. Finally, after eons, their plan to take control of Earth and its scarce reserves of Grandidierite, is almost complete.
Surviving a near-fatal plane crash, Rex, has been rebuilt and wired like a computer. As he recuperates at home, a blazing, fiery rock crashes across the roof of Rex’s home and explodes in the nearby forest. Suddenly, Rex and his best buddy, the furry, yeti-droid Rion, find themselves caught up in the adventure of a lifetime. Can they survive with only Rex’s wits and technology to help them against the deadly alien invaders and trigger-happy, nuke-blasting marines?