Hammer Film’s follow-up to the successful One Million Years B.C. is set in an ancient past when humans and dinosaurs co-exist. Athletic cavewomen and hairy men wander around, grunting, sweating and occasionally sacrificing evil blonde babes to the sun in return for protection from stop-motion beasts. The fun-loving, energetic Sanna (Victoria Vetri), one of the sacrificial offerings, manages to escape during a ritual and joins another tribe where she says ‘necro’ a lot and falls in love with a surprisingly hairless guy.

A young couple moves into an infamous New York apartment building to start a family. Things become frightening as Rosemary begins to suspect her unborn baby isn’t safe around their strange neighbors.

In order to flee from powerful enemies, young Mayan king Balam leads his people north across the Gulf of Mexico to the coast of what will become the United States. They build a home in the new land but come into conflict with a tribe of Native Americans led by their chief, Black Eagle, while both Balam and Black Eagle fall in love the beautiful Mayan princess Ixchel.