On its way back from an anti-terrorism mission, a 500-member special force was suddenly swallowed by a space-time vortex. When they climbed out of the wreckage of the crashed transport plane, they suddenly found themselves in a prehistoric world where giant beasts were rampant. As they fought for survival, military doctors detected lethal radiation in dinosaur egg fossils. Scientists are horrified to discover: There is only one month left before the asteroid hits! The troops split into two factions - the radicals wanted to use missiles to blast asteroids; the conservatives advocated building underground fortresses to protect themselves. Commander Lin Zhan made a surprising decision: to use a nuclear bomb to detonate asteroid fragments in low-Earth orbit. At the same time, a team is secretly dispatched to save key dinosaur species. When the blast wave swept across the world, survivors heard the sound of newborn dinosaurs breaking their shells in underground bunkers...
