Modern history scholar Mu Feng accidentally crosses into the primitive Great Wilderness, becoming a member of the Jiang Tribe. The moment he opens his eyes, the entire clan faces the crisis of cold, starvation, and extinction at any time. At the moment of life and death, Mu Feng activates the Great Chieftain System. Relying on modern knowledge and system abilities, he drills wood to make fire, chisels ice to catch fish, and builds thorn defensive walls. In this crisis-ridden prehistoric Great Wilderness, Mu Feng goes from being the chieftain of a small tribe on the verge of extinction to leading his tribesmen toward abundance and prosperity.