Xiao Zhaohua, the princess of Daxia, had an adventure just after she was born. Her father, Xiao Xuan, could clearly hear her voice. This unique connection allowed her to unintentionally reveal the truth that none of the five princes were his father's biological children, and became his most secret "intelligence source." The power struggle in the palace was turbulent, and the queen's party set up poisonous schemes, spread rumors, and even plotted palace coup. Xiao Zhaohua used the transparency of a child to discern the conspiracy and use his heart to enlighten his father.