在这部山洞人喜剧片中,披头士鼓手林哥史达与芭芭拉·贝琪主演的一部原始时代喜剧，他们都扮演石器时代的山洞人。头脑有点笨笨的林哥竟然迷上了部落头目的女人，乃被逐出部落，他经历了种种有趣的奇遇之后，成功地串连了从其他洞穴中被逐出来的原始人，成立了一个属于他自己的部落。
A simple caveman accidently becomes leader of a clan of cavemisfits and outcasts. But he ultimately wants to outsmart the bigger, stronger leader of his former clan and win the affection of a beautiful cavewoman.
