After the Anshi Rebellion, Chang'an was devastated and undercurrents surged in the court. In order to find her missing brother, the daughter of the guilty minister {Su Lingwei} entered the palace incognito and became a female official. She was appreciated by the queen for her intelligence and agility, but she accidentally got involved in a dispute for the throne. Li Chenyu, an old acquaintance of hers, was the son of Prince Ning to whom she was engaged, and is now a confidant of the prince. The two reunited unexpectedly due to their conflicting stances. From testing each other to secretly joining forces, they vowed to uncover the truth about the Su family being framed. Ling Wei helped Chen Yu resolve crises such as assassinations and the robbery of food and grass, while Chen Yu helped her find the traces of her brother - his brother lived in seclusion in Zhongnan Mountain under a pseudonym and had ironclad evidence that powerful officials were colluding with the enemy. In the end, the two presented evidence to overthrow the traitor and stabilize the situation in the court. Li Chenyu refused to marry and gave up his position, and joined hands with Su Lingwei to stay away from Chang'an and go to the mountains and forests to live in seclusion.
