High school misfits Stoney and Dave discover a long-frozen primeval man buried in their back yard. But the thawed-out Link—as the boys have named him—quickly becomes a wild card in the teens' already zany southern California lives. After a shave and some new clothes, Link's presence at school makes the daily drudgery a lot more interesting.
As the Earth wrestles with its agonising birth, the peoples of this barren and desolate world struggle to survive. Driven by animal instinct they compete against the harsh conditions, their giant predators, and warring tribes. When two people from opposing clans fall in love, existing conventions are shattered forever as each tribe struggles for supremacy and Man embarks on his tortuous voyage of civilisation.