Sang Ning was originally the Eldest Princess of the Zhou Dynasty. After dying young, she is reborn as the true daughter lost in the countryside. The fake daughter Nan Siya provokes her, and her family is biased toward Nan Siya, yet Sang Ning establishes her foothold in the Nan family relying on ancient wisdom and means. He Siyu, coming from a top-tier wealthy family, is playful yet gets attracted by Sang Ning. At the birthday banquet, Sang Ning draws He Siyu's attention with two slaps, and he begins to proactively approach her. When fighting for family property, Sang Ning kicks the fake daughter and tears apart her family's hypocritical masks, ultimately making them suffer the consequences and winning the respect of the Nan family. Old Madam He appreciates Sang Ning, supporting her and He Siyu, and He Siyu also realizes his feelings for Sang Ning.