Ka-Zar is the main protagonist of Ka-Zar of Prehistoria. He is a Caveman who lives in the Mammoth tribe in the valley of Lo-har in central regions of Prehistoria and tries to win the love of a cavewoman named Jana the daughter of his tribe's leader Tumak. When a rival tribe attack his cave village and captures Jana, Ka-Zar goes on long and dangerous journey across the land and save Jana from M' Wa-Lot the leader of his clans' enemy tribe who plans to mate with Jana and have her for himself.