Dual lives of male and female protagonists. In the previous life, Li Shuniang broke into the affair between her eldest sister and her lover and was killed and reborn. Then she married the disabled prince. Because he was divorced for unknown reasons, he disguised himself as a woman and went to the military camp to ask for divorce papers from the husband he had never met. The prince gradually fell in love with himself as a man. Slowly, I discovered that the murder in the previous life was not as simple as imagined, and was actually inextricably related to the prince. What is the truth?