Two years ago, Prince Chu Heng of Da Shang swore to protect his mother Xie Wanqing by saying, 'If you harm my mother, she will be killed without mercy.'. Two years later, Chu Heng welcomed Xie Wanqing back to the palace to attend the coronation ceremony, but was humiliated by the soon to be empress Cao Bao'er. Chu Heng arrived late and did not notice anything unusual, but later discovered through clues that his mother may be in danger. Cao Bao'er confessed the whereabouts of Xie Wanqing, and Chu Heng promptly rescued Xie Wanqing, who was treated as a "sacrificial object to heaven". Chu Heng fulfilled his oath and exposed Cao Bao'er's despicable behavior. Cao Bao'er falsely claimed to be pregnant, but was exposed by Xie Wanqing as a divine doctor, and the life-saving medicine had been destroyed by Cao Bao'er. Cao Bao'er suffered a physical and mental breakdown, falsely accused her parents, threatened to kill her relatives, and ultimately received punishment