The story is about the end of the Longqing reign, when the emperor was seriously ill, the prince was young, and the government and the country were in turmoil. Empress Li ordered the recall of the female guard Shen Shuang, who had retired to her hometown, to protect the prince. Little did she know that a huge trap had turned Shen Shuang into a fugitive who was trying to assassinate the prince, and she was going to kill him. In order to find out the truth, Shen Shuang, who was at a loss, started a story to find out the truth behind the scenes.