Si Ling, a modern high-risk female prison warden with severe obsessive-compulsive disorder and control freak attributes, traveled through time and became a waste queen of the Zhou Dynasty who had just been thrown into the cold palace. Faced with the hellish start of the harem where bewitching concubines were rampant, servants were bullying, the emperor was gloomy and violent, and the powerful ministers were eyeing her, she did not choose to fight for favor in the palace, but suffered from an occupational disease and directly started the "prison management mode."
She set up the Cold Palace as the "first prison area" and used mental pressure and violent suppression to subdue the thorn-headed palace ladies and eunuchs; she regarded the emperor Xiao Jingyuan, who was gloomy and world-weary due to the shadow of his childhood, as a "key target of assistance" and carried out compulsory psychological intervention and work and rest management. Facing the sickly regent (villain) who has a twisted love for her, she uses criminal psychology to play with him. In the end, she not only purged the harem and court, but also made the gloomy tyrant her most loyal "prison guard", and the two teamed up to create an iron-blooded dynasty that enforced laws and regulations.