During the Yonghe period of the Great Zhou Dynasty, the regent Xiao Jing exercised power and supported the young emperor Zhou Yuan in his own administration. However, this seemingly stable relationship between monarch and minister hid complex emotional entanglements - Zhou Yuan developed a morbid possessiveness towards Xiao Jingxing that transcended the boundaries between monarch and minister.
At the same time, Shen Qingqiu, the daughter of the Jiangnan Marquis, secretly founded the "Youlu" intelligence organization to investigate the truth behind the robbery of his family ten years ago. Xiao Jingxing investigates the Youlu organization, gets involved personally, and gets close to Shen Qingqiu. In the process of testing and counter-testing, the two went from game to cooperation, from use to temptation.
With the invasion of Beidi and the undercurrent in the court, the three of them each faced a choice in the whirlpool of power, responsibility and emotion. How does Zhou Yuan's pathological possession end? How does Xiao Jingxing choose between responsibility and love? Can Shen Qingqiu complete his revenge and find his own happiness?