A modern special forces soldier accidentally returns to primitive society, becoming a poor tribe's little primitive person. In this era of the law of the jungle, he displays extraordinary wisdom. He uses a sling to defeat terror birds, uses fish traps to change the food system, uses pottery trading to expand the tribe's population, step by step becoming the new tribal leader. But the leader's road has only just begun. Winter is approaching, food is scarce, the internal tribe needs integration, and surrounding tribes are eyeing covetously. Can he rely on knowledge and courage to lead the tribe from famine to prosperity, ultimately dominating this continent? A primitive-era counter-attack legend is about to begin!