In the tenth year of Tang Yuanhe, Chang'an Tianjie was stained with blood at dawn. Prime Minister Wu Yuanheng was assassinated in the street by men in black on his way to court. His head was missing, which shocked the government and the public. His daughter, Wu Xuanzhen, had practiced Taoism in Zhongnan Mountain since she was a child. After hearing the news, she came down the mountain all night, vowing to find out the truth about her father's tragic death, retrieve his remains, and kill the enemy with his own hands.
Xuan Zhen takes his personal maids Deng Ran and Lynx "Chasing the Wind" and breaks into the turbulent Chang'an and Luoyang. She discovered that her father's death was far from a simple assassination, but a shocking conspiracy involving the separatist rule of feudal towns, the dictatorship of eunuchs, and the secret technique of "Sky Fire" in the Western Regions. No one in the court dared to speak, Shence Jun's attitude was ambiguous, and even the emperor chose to remain silent...