One Million B. C.

In the survival-of-the-fittest mentality of the Rock tribe, the strongest receive the best of everything, while the scraps are left for the weak. When Tumak (Victor Mature) fails to protect what is his from the tribe's leader, Akhoba (Lon Chaney Jr. ), the Rock people send Tumak into exile. Discovered by Loana (Carole Landis), a member of the peaceful Shell tribe, Tumak reluctantly joins her strangely kind people. Tumak struggles to adapt, but Loana will not give up on changing his savage ways.