Lin Zhao, a graduate student in the Department of Modern History, accidentally traveled through the Dajing Dynasty while repairing the ancient Xixia book "Records from the Return to Tibet", and his soul entered the body of a border boy "Shen Zhao". Bringing modern wisdom and secrets from ancient books, she was involved in the catastrophe caused by the "Mountain and River Map" - the Tiansha Sect resurrected the tyrant of the previous dynasty and stirred up the martial arts world. Xuanjian Sect, Yaowang Valley and other decent sects were in danger.
Lin Zhao got acquainted with Lu Chen, a disciple of Xuanjian Sect, Gu Qinghuan, the young master of Qingyu Pavilion, and others. He used Sanda and ancient martial arts to create the "Thirteen Styles of Breaking the Wind", and relied on forensic knowledge to solve strange cases and detoxify. As the investigation deepens, she discovers that she is the reincarnation of Lin Yan, the former Si Tianjian's young eunuch, and that the letter is the key to salvation that spans thousands of years. In the end, she assembled the "Protection Alliance", used the "Return to Ruins Sword" to crush the villain's conspiracy, and decided to return before the time and space rift closed, leaving behind a legend that spans ancient and modern times and protects the people.