Yan Xi, the seventh prince of Yan State, who is known as the cold-blooded killer, conquers Qi State and wipes it out, taking away the little princess of the fallen country, Tao Xiaowei. After the five-year-old cute girl Tao Xiaowei enters the palace, she stirs up the whole palace, and from then on, a daring little girl moves into the palace. The cold-blooded prince experiences the hardship of raising a child for the first time, and takes good care of Tao Xiaowei.