Modern-day intern doctor Shen Zhou survives a plane crash and travels back 30,000 years to a primitive wilderness. The moment he arrives, he becomes a sacrificial offering to a primitive tribe! After binding himself to the Fire Seed Civilization Rebuilding System, he escapes death with his surgical skills. By summoning lightning to obtain fire, he becomes the tribe's Great Shaman. He boils salt, builds crossbows, introduces crops, and smelts iron to make tools. He fights against the brutal Black Bear Tribe, resolves internal conflicts, and takes in displaced refugees. With nothing but an ordinary human body, he struggles to restart human civilization in a perilous prehistoric world.