In the thirteenth year of the Republic of China, Guangling Province. The inner courtyard of the warlord Lu Zhenshan imitates the etiquette of the harem. His wife is like a queen, and his concubines are divided into different grades. Shen Hengzhi, the concubine of the third concubine, was driven to the next door to the servant's room in the West Cross Courtyard. In her precognitive dream, she saw that her fiancé would break off the engagement in public three days later, her mother would be framed by her aunt and thrown into the woodshed, and she would be expelled from the Lu family like a dog. She also has a secret: a cubic meter of storage space can only store dead objects and be accessed ten times a day. In the space, she hid in advance the account books of her aunt's mother's embezzlement of military pay, the letters of her second concubine's collaboration with the enemy, and the jade pendant that could prove her inheritance rights. At the wedding banquet, in front of the governor's father, she took out evidence from the space and accused her fiancé's family of embezzling the Lu family's property. The whole place was in an uproar. Her aunt wanted to punish her by kneeling in the ancestral hall, but in a precognitive dream, she dug up the bones of the innocent souls under the tiles of the ancestral hall in advance. She was suppressed by the rank in the inner court, so she used precognitive dreams to dismantle every trap; her eldest sister wanted to steal her right to inherit military power, so she used space to secretly exchange key documents, so that the other party would fall into the trap. After fighting back again and again, she went from being an unworthy concubine to becoming the "Head of the Inner Court" personally appointed by the warlord, forcing the head wife to kneel down and admit her mistake. But the dream suddenly revealed that her future husband would be the man who had been secretly helping her but had a blood feud with the Lu family. And his real purpose is to use her hands to destroy the entire Lu family...