Two part mini-series follows the journeys of two different groups of modern humans as they encounter other human species. The first group encounters Homo erectus and is forced to cross the Thar Desert to reach the sea. The second group encounters Neanderthals in Europe.
Planet of the Apemen was a dramatised documentary on the struggles of Homo sapiens with Homo erectus in the first episode, and Homo neanderthalensis in the second episod