at the end of the warring states period, wars continued and attacks continued, and the people were suffering and no one cared about it. when qin prince ying zheng was trapped as a hostage to zhao in his childhood, the kind-hearted yan woman nurtured her and her son gao jianli to nurture her. when king xiang died, ying zheng rushed back to qin with his envoy to ascend the throne, and the two friends were separated from each other. ying zheng (played by jiang wen), who became the king of qin, ordered the army of the three qins to conquer cities and plunder land, and the princes of various countries were frightened. after the destruction of zhao, the great cause of unification is just around the corner. thinking of the past, the king of qin hoped to find gao jianli (played by ge you) to write "song of qin". gao refused to obey orders and eventually became a prisoner, but he used this opportunity to meet the beautiful princess liyang (played by xu qing). the jealous wang ben (played by wang ning) left a brand of shame on his high forehead. out of respect and love, princess liyang personally comforted her, but gao wei wanted to die.
the ancient divine beast qilin in the past forged seven demon-subduing swords, including xuanyuan and chengying, and enlightened seven practitioners on earth to become the descendants of the seven swords. at the same time, a snake demon who has practiced for thousands of years in changshou city has harmed living beings in order to increase its cultivation. the successor of the seven swords adhered to the duty of protecting peace in the world and fought against the snake demon on the black demon cliff and sealed it.
