Germany, 49 million years B.C. A day in the life of a small forest mammal called Leptictidium who is trying to raise young, a giant predatory bird called Gastornis trying to hatch an egg and a primitive whale, Ambulocetus, who is hunting in the water.
Mongolia, 25 million years B.C. This episode follows a young Indricotherium. After a dramatic birth, he must survive in a world of rhino-sized predators like Hyaenodon and pig-like monsters such as Entelodon.
Ethiopia, 3,2 million years B.C. A clan of Australopithecus struggle to survive after being driven from their territory. Grey, the leader, is challenged by the younger Hercules, and Blue must try to survive without the guidance of his mother.
Paraguay, 1 million years B.C. A powerful Smilodon called Halftooth must survive on his own after being driven from his clan. South America is a bizarre world of giant sloths, car-sized armadillos and flightless birds the size of dinosaurs.
30,000 years B.C. In the middle of the Ice Ages, a mammoth herd migrates to escape the chilling winter. On their way, they encounter dangers like snow-covered bogs, cave lions, and the most dangerous predators yet- humans.