The forgotten concubine of the Hou family was used as a political pawn by the family and married into the third prince's house because she looked exactly like her sister-in-law. She originally wanted to be cautious and save her life, but she had to be involved in the responsibilities of the princess and the further control of her family. Facing the prince Zhao Mingxu, who appears to be sunny but is actually in the vortex of seizing the legitimate heir, Shen Zhiwei disguises himself as a "stand-in" and works step by step. While dealing with difficulties in the palace, plots in the court and demands from the family, he gradually reveals his true wisdom and character that are completely different from "White Moonlight". Zhao Mingxu first saw others through her, then was attracted by her unique soul, and finally recognized his true heart. Shen Zhiwei also changed from passive acting to actively breaking the situation, teaming up with Zhao Mingxu to expose the conspiracy of his family and political opponents, break the "substitute" curse, win respect and love, and help him consolidate his position.
