Modern girl Qiao Ning wakes up to find herself transformed into the princess consort of the stern Prince Gu Chengyan. Facing strict rules, she is determined to escape, but is repeatedly caught by the prince. Using her wits and practical skills, she improves the division of labor in the prince's residence, causing funny mishaps and winning Gu Chengyan's admiration. After attending a banquet, Gu Chengyan suddenly falls ill, and Qiao Ning discovers something suspicious about the medicine he regularly takes. She drops her escape plan, teaming up with divine doctor Lu Bai and General Shen Xiao to investigate, uncovering the truth behind someone using Liu Ying's hand to secretly harm others, and handing the evidence over to the magistracy.