The play is adapted from Xing Ling's novel "The Book of the Emperor".　　Legend has it that the two families of Emperor Han jointly created Dajing, but ten years ago, the emperor's family was convicted of rebellion, and only one orphan girl was imprisoned in Jishan. Ten years later, the crown prince Han Ye (played by Gong Jun), who was bent on saving the orphan daughter of the imperial family, met a delicate water bandit who kept saying that he would not marry when he went to Jingnan, the hometown of the emperor, to exterminate the pirates. The female water bandit called herself Ren Anle (played by Di Lieba), she took out 30,000 water divisions and boarded the Beijing division to ask for the crown prince, but in the process of stalking Han Ye, she showed extraordinary intelligence. Only Luo Mingxi, the secretary of the Criminal Department who secretly assisted Ren Anle, knew that she was the orphan daughter of the emperor's family, Emperor Ziyuan, and she came to overturn the case for the family. Ren Anle even cracked the imperial examination fraud case and the Jiangnan flood case, and also had a hot fight with the princess An Ning on the edge of the town. And Han Ye also had a good impression of her because of the same position of the two families and countries, but at this time, Ren Anle's stand-in, the fake emperor Ziyuan, also returned to the capital and was ordered to run for the crown princess, and the palace was already full of conspiracies, so it fell into a bigger whirlpool.