In order to investigate the life experience of Shen Dieyi, Shen came to Chang 'an under the guise of identity. In order to avoid Shen Dieyi's engagement, Shen disguised as a man and went to Shangyi Museum. Here, Shen met Shen Dieyi's fiance, Yang Zian, who helped the emperor to investigate the case, and Li Xinyuan, the second prince who concealed his royal identity. They gradually got to know each other and became good friends. Shen also fell in love with Yang Zian.
In the process of getting along with Shen, she gradually fell in love with Shen, but there are still many things to be solved between them. For Shen, the most urgent thing is to find out the mystery of Shen Dieyi's life experience and let Shen Dieyi know everything, say everything, and say everything, so as to repay Shen Dieyi himself.