During the Xuanhe period of the Northern Song Dynasty, financial analyst Su Jin became the son of Cai Jing, a powerful villain. He witnessed the foreshadowing of the Jingkang Disgrace, used modern financial thinking to rectify the salt and iron monopoly, established an early credit system, used metallurgical knowledge to improve ordnance, and used epidemiological knowledge to prevent and control the Bianjing Plague. He dealt with the old and new party struggles, and while bearing the infamy of "the son of a powerful official", he secretly strengthened national defense and accumulated national strength. Finally, when the Jurchens went south, he used advanced strategies to rewrite the tragedy of the fall of the Central Plains.
