In the Dajing Dynasty, Shen Qingyi, the former legitimate daughter of a general, was reduced to the daughter of a criminal official and hid in Prince Jing's palace as a maid. The cold-faced prince Xiao Jinyuan noticed the difference and pressed forward to test him step by step. She relied on her wisdom to resolve strife in the family, helped him smash the conspiracy of his political opponents, and investigated old family cases under his protection. When the dust-laden secrets of imperial power are intertwined with the entanglements of love and hate, the two of them create a world-famous love together on the edge of a knife amidst the turbulent intrigues of the house.
