Modern archaeologist Ying Zhao traveled through time and became the crazy young son of Qin Shihuang. He was given the marriage to the cold and beautiful Princess Yangcheng. The civil and military officials of the dynasty regarded him as a monster that was causing harm to the country and begged him not to go crazy. However, he burned laws and regulations, initiated public discussions, and transformed military camps, turning the imperial machine upside down. Li Si is torn between law and public opinion, Meng Tian trembles between loyalty and life, Zhao Gao hides the secret of immortality, and Chen Ping is weaving a web of ledgers that can overthrow the dynasty. When the second volume of the First Emperor's edict appears, who is the true successor of Qin?
Ying Zhao used madness as a cover to implement the "people's law" and "military settlement system", which attracted Li Si's secret support but openly impeached him. Meng Tian led his army to mutiny but was forced to accept reforms. Princess Yangcheng used the intelligence network to clear away the aristocratic backstabbing. Zhao Gao took the opportunity to spread rumors about the "elixir of longevity" and induced Ying Zhao to explore the Lishan underground palace, accidentally activating the Qin Dynasty's lost "iron law mechanism" - a bronze calculation system that can automatically regulate taxes and military service. When Chen Ping was sorting out the accounts, he discovered that 70% of the empire's wealth had already been misappropriated by the nobles. He conspired to unite the border troops to establish their own tax administration. Before his death, Li Si handed over the second volume of his posthumous edict to Yangcheng, revealing that the First Emperor had long foreseen that the empire would eventually collapse, and that only "the rule of man and the rule of law" could survive. Ying Zhao refused to proclaim himself emperor, but publicly burned the jade seal of the divine right to imperial power, declaring that "the law is the destiny of heaven." Zhao Gao activated the core of the underground palace in an attempt to resurrect Qin Shihuang's remnant soul with a blood sacrifice. Meng Tian led his troops to rebel, Yang Cheng led a group of female officials to control the center, and Chen Ping used the ledger as a weapon to ignite a national uprising. The empire was about to collapse. Ying Zhao stood on the top of Xianyang Palace and asked the whole world: Do you want a divine king or the law of a living person?