The teenage boy Niam lives in one of the largest mammoth hunters in the last peak of the Ice Age. Together with others, they hunt themselves, learn natural skills, experience "bushcraft" in the most difficult and purest form in human history. When the tribe escapes from foreigners and wanders himself. However, prehistoric hunters in the unknown region are impressed. The story of children continues and one dramatic situation alternates with the other. The facts are based on the findings of contemporary anthropology and accompanying sciences (Paleobotany, zoology, climatology, etc.). New knowledge interprets the period elaborated by the classic of this genre, Eduard Štorch. In the dynamic building of the story, there is a place in addition to authentic descriptions and dramatic situations for humorous relief of the story. Themes of history, nature, anthropology, art, return to Czech youth literature genre of adventure story in a real natural environment.