Contrary to history, Princess An Ding Si, the first born of Wu Ze Tian, was not killed but smuggled out of the country. After she grew up, she returned to take revenge on her mother for sacrificing her in her plan to become the first Empress regnant of China. The princess assumed the identity of her younger sister and became the famous Princess Tai Ping, the youngest and the most beloved child of Empress Wu Ze Tian. She used her mother's blinding love for Tai Ping to gain control of the court and to advance her ambition of becoming the ruler of China herself.