Bai Ruoli was originally the daughter of a general, but her father was falsely accused of treason and the whole family was executed. She entered the palace as the daughter of a guilty minister and worked as a maid, hiding under the pseudonym "Ruoli". Lingya, on the surface, is an inconspicuous eunuch in the harem, but in fact, he is a "shadow guard" who secretly investigates palace secrets. He is directly under the emperor's confidant agency, and his true identity is the queen of Zhongliang of the previous dynasty (the family was also destroyed due to political struggles). He is gloomy and taciturn, has keen observation, acts coldly and decisively, and has extreme distrust of human nature. However, in the confrontation with Ruoli, he gradually reveals complex emotions. He investigates palace cases to collect evidence of political enemies, and looks for opportunities to rehabilitate his family. Then what kind of sparks did they collide with...