Murong Yu, the young princess of Zhenbei Palace, is a crazy and evil woman who is feared by everyone in the capital. She is ruthless and treats human life as nothing. She fell in love with Pei Jinnian, the legitimate son of the Pei family in Hedong, and because she was jealous of his fiancée Cui Mingyue, she dragged him into the lake and tried to drown him. This incident shocked both the government and the public, and the emperor was so angry that he cut off the title of the princess, expelled her from the capital, and sent her to Baique Temple to "penetrate her sins". But no one knew that this exile, which looked like punishment, was just the first step in Murong Yu's plan to conquer the world. The bloody storm in the capital had just begun to brew.