The story takes place in an imaginary historical dynasty. The current emperor, Zhao Wuji, was getting older, but he had not established a heir for a long time, which caused undercurrents among the princes and each had their own agenda. Prince Xiao Dingkun appears to be submissive, but in fact he has already laid a dragnet to eradicate his dissidents and successfully ascend the throne. The valiant cavalry general Shen Changqing was involved in the vortex of power struggle because of his great achievements. Lu Qingyao, the daughter of the Grand Tutor, had to enter the palace to be drafted for the sake of her family's safety. From then on, she began a shocking palace career. Several story lines are intertwined and parallel, revealing the cruelty and darkness of the palace's machinations, as well as the distortion and struggle of human nature under the pressure of imperial power. In the end, after a series of conspiracies, betrayals and sacrifices, a new imperial power was born, but the shadow of the power struggle always lingered.
