Mosu (seventh day of the lunar month), a three-year-old girl. Dressed as an older young woman from the Qing Dynasty, she had no part in the talent show and marriage. Just when she thought she was living an ordinary life in the Qing Dynasty, Brother Huang appeared in her life. Some desires for power and the pursuit of emotions, when Mo Su began to decide her own destiny, fate played a huge joke on her. In fact, everyone is a pawn on someone else's chessboard. What will happen to Mo Su in the end?