Xue Fangfei, the daughter of a county magistrate who came from a wealthy family and lived a happy life, lost everything after encountering a great change. Entrusted by her lifesaver, Jiang Li, the daughter of the Minister of the Central Secretariat, she returned to the capital as Jiang Li. With the help of Xiao Heng, the Duke of Su, and others, she overcame many difficulties and continued to fight against injustice. She eventually rescued her father who was accidentally imprisoned, helped Xiao Heng to uphold justice, and protected the people, and finally regained a good life. The series is adapted from Qianshan Chake's novel "Marrying a Daughter".