In Chang'an during the prosperous Tang Dynasty, female historian Shen Zhiwei was ordered to sort out the documents of the previous dynasty and accidentally discovered a brocade book written in cipher text. The brocade book records a tampered palace secret case involving the prince's dethronement and the truth about the border war. In order to find out the truth, Shen Zhiwei dealt with all the forces in the court and crossed paths with Xiao Ce, the general who cared about the world, and Gu Yunzheng, the secretive son of the prime minister. In the intrigue and intrigue struggle, she not only had to protect herself and Jinshu's secrets, but also had to make a choice between the justice of her family and her personal emotions. In the end, she used her pen as a blade to restore the truth of history and change the fate of Chang'an.
