The year is 2037 A.D. Depletion of natural fuels has eliminated electrical power throughout the world. No light… no heat… no T.V., until a team of award-winning scientists succeeds in…

Cavemen Ulli (Giuliano Gemma), Kao (Lando Buzzanca), Grrr, Put, Zog, Maluo and Uto meet Filli (Senta Berger) with the light-brown tail.

A chastity belt provides an endless amount of grief for a woman whose jealous husband has gone off to the Crusades.