Gu Qingwan, the legitimate daughter of a general, was forced to enter the palace as a hostage because her father and brother were so outstanding. Faced with the conspiracy of the deep palace and the increasing pressure of the darkened villain, Gu Qingwan restrained her sharp claws and turned her "violent" into a "coddled and brainless" protective color, which was actually a secret plan. She and the cold-faced prince Xiao Jingzhan, who was caught in the whirlpool of fighting for the right to inherit the throne, went from being wary of each other to joining forces to fight against the enemy. The two of them tore through the fog of the court and the harem while relying on each other for life and death, and eliminated all the powerful officials and opponents who tried to stifle their vitality.