In a primitive and wild land, the Yue Ling and Chi Yan tribes have been fighting for years, suffering from scarce resources and difficult survival. Lu Yan, who traveled through time, used a lighter to create fire to deter the tribesmen, saved the severely injured Yue Ling chieftain Ling Yue, solved the difficulty of eating the highly toxic konjac, and helped the tribe overcome survival crises. He successively unlocked core technologies such as salt making, iron smelting, and shield making, formed a standardized army, and made up for the shortcomings of the tribe's combat power. Facing the desperate situation where all members of the Chi Yan tribe fell ill, Lu Yan gathered herbs to save people, repaid grievances with virtue, and completely resolved the conflict between the two tribes.