Our present Era is just beginning. Stone Age humans are migrating into Europe from Africa towards the end of the last ice age, around 20,000 years ago. Neanderthals, the old ones, have mostly died out, the few survivors driven over the mountains to the north. The many caves they once occupied overlooking the sea are now the homes of the newcomers. There, the southern part of the Continent teems with animal life, as the massive glaciers, receding into the high mountain ranges, still cover the northern lands beyond. Survival is difficult for them in their hunter-gatherer society, forced to live a hand to mouth existence. Abjectly dependent on the changes in their environment and the game they hunt, they are controlled by rigid religious principles. Kaynu and Alida, teenagers growing up together, fall in love and rebel against these restrictions. In a number of natural disasters and human conflicts, they struggle for survival. In wild and thrilling adventures, they face the dangers of their primitive land and the savage elements of nature. The treachery of ruthless and murderous tribal adversaries