Shen Qingci, the legitimate daughter of the Yongning Marquis Mansion, married into the Jing'an Marquis Mansion on behalf of her concubine who had escaped from marriage in order to save the family's face. It is rumored that the Marquis of Jing'an, Lu Jingyuan, is ruthless and murderous, and the residence of the Marquis is disturbed by his eccentric concubine and his unruly concubine. Unexpectedly, on their wedding night, Lu Jingyuan actually handed over the heater: "With me in the future, no one will dare to bully you." Faced with the difficulties faced by his concubine, his concubine's sister, and the neglect of his servants, Shen Qingci resolved them one by one with his housekeeping skills and pharmacological knowledge, and even helped Lu Jingyuan cope with the crisis in the court. Lu Jingyuan cleared all obstacles for her. The inner house protected her and the court supported her. From the helplessness of a substitute marriage to the deep love of staying together, the two protected each other in the house fights and intrigues, slapped the troublemakers in the face one by one, and finally became a divine couple envied by everyone in the capital.
