A spaceship gets lost and is forced to make an emergency landing on an unknown planet. The planet looks much like Earth, only with no trace of civilization. Soon the crew discovers that there are bloodthirsty dinosaurs on the planet. The crew hopes to be found and rescued, but until then, they must fight to survive.
The film focuses on mammals of the Cenozoic Era. It shows many developments and adaptations achieved as milestones in Cenozoic history, such as the evolution of the horse. The film also covers significant concepts such as geological time, differentiation of species, adaptation, and extinction.
