During the reign of Emperor Taizong of the Song Dynasty, Bai Nianguang, the third-rank prison official in the court, was executed by secret decree, leaving his five-year-old daughter Bai Yanyu to experience the bitterness of the world. After ten years of confinement in the Bai Mansion, she grew into a beautiful, wise, tough and courageous woman. Fifteen-year-old Bai Yanyu met Zhao Yuankan, the third prince of the current dynasty, who was transformed into "Shu Bishan", in the Yuanyuan Temple. The two fell in love with each other due to fate, but fate had no choice but to play tricks, and their identities were very different. They were separated and reunited for ten years as if they were in the blink of an eye. Yanyu suffered all the hardships in the ups and downs of the court, and later changed her name to Liu E to help Zhao Yuankan ascend to the throne. Bai Yanyu also entered the palace by imperial edict. She did not forget her original intention amidst the struggle for power in the harem, and eventually became the famous Empress Zhang Xianmingsu in history.