Due to a well-planned conspiracy or a series of coincidences that led to an identity swap, Shen Shenyu mistakenly entered Prince Jing's palace in the capital and became the "Prince Jing's Crown Princess", while the real Crown Prince Li Chenglan (who was also her original fiancé Li Chenglan) married another woman (Du Ruoyun). The story revolves around how they discovered this mistake, and how they found the truth in a complicated situation and returned to the correct life trajectory.
