In order to investigate the family injustice, Yan Fei entered the palace assuming someone else's identity. She knew that she was just Emperor Bai Yueguang's stand-in, so she took advantage of the situation, pretended to be weak, and plotted secretly. She thought everything was under control, but she didn't expect that the seemingly affectionate emperor Lu Jinyan had already moved her sincerely during her "performances" again and again. When she thought she would be able to retire after her great revenge, he refused to let go. At this time, the sudden appearance of the original "White Moonlight" in the palace made all love, hate and calculation fall into a more complicated situation.