With the early Korean era as the background, this film jokes about the history of the usurping of the throne by the patriarch of Korea. Jin Naijing (Song Kanghao), a descendant of rebellious officials, has the skill of meeting people, but because of his humble status, he can only live in seclusion in the wilderness with his brother-in-law (Zhao Zhengxi) and his son Zhen Heng (Li Zhongshuo). The owner of the largest brothel in Hanyang (Jin Huixiu) made a special trip to visit Jin Naijing and lobbied him to go to Hanyang to make money by looking at the picture, but he was not understood by Zhenheng. Jin Naijing came to Hanyang step by step, made a lot of money and won the appreciation of loyal minister Jin Zongrui (Bai Yunzhi), and even won the trust of the king. However, due to his outstanding talent, Jin Naijing had to be involved in the struggle for the throne of the king's own brother Yang Dajun (Li Zhengzai), and affected his son Zhen Heng, who had changed his name to number one. Jin Naijing decided to help Jin Zongrui and the little king to sabotage the plot of the king of Shouyang, but he could see through the hearts of the people but could not determine people's fate. The torrent of history still goes on and on.