During the Dajing Dynasty, the eunuchs' exclusive power and the feudal kings' separate regimes coexisted. The heroine Shen Qingwu is the daughter of a guilty minister. Because she looks exactly like the "Bai Yueguang" (the late princess of the former dynasty) of the powerful eunuch Wei Chengxu, he was secretly taken into the palace as a substitute. On the surface, Wei Chengxu is ruthless and unfeminine, but in fact he is obsessed with "White Moonlight"; Shen Qingwu appears to be weak, but in fact he is tolerant and intelligent. He deliberately gets closer to find out his father's injustice, but in the process, he develops a complicated relationship with Wei Chengxu, and the two are involved in the vortex of the change of imperial power.
