This is the story of a primitive hunter who returns to his family with the knowledge acquired in a distant but friendly tribe, and begins to apply it, earning the title of Great Leader. He knows how to make fire, knows how to improve weapons, how to build traps for fish and animals, how to tame wild aurochs and ensure the survival of the tribe in times of famine. But knowing and doing are two different things. The leader has many problems: natural disasters, hostile neighbors, distrustful relatives, not all of whom are happy about changes, and not all undertakings can be completed during the life of one person, but a start has been made... For a wide range of readers .