One Million B.C.

A group of hikers caught in a storm seek shelter in a cave. They encounter an anthropologist who interprets prehistoric carvings that introduce the story of a young caveman. His son Tumak (Victor Mature) begs the right to his first kill, a small triceratops which he wrestles to death. He is found by Loana (Carole Landis) of the Shell Tribe, who takes him to their cave.