Lin Wan, a top student in modern medical school, accidentally traveled to Chang'an of the Tang Dynasty. In the narrow alley of Qingshiban, she rescued the injured Shen Yan, the captain of Qingqi School of Zuojinwu Guard, and the two became friends. However, their love and career paths are full of ups and downs. For their own benefit, the rival family constantly hindered the development of their relationship, and designed to make Shen Yan misunderstand that Lin Wan was colluding with the enemy country, causing the relationship between the two to break down. At the same time, the Tang Dynasty is facing invasion by external forces. The two protagonists need to break through class restrictions in a short period of time, change some outdated systems, and help the Tang Dynasty resist foreign enemies. In the process, Lin Wan's modern medical knowledge was limited in its application in ancient times, and Shen Yan also fell into a dilemma due to disputes between his family and the court. The appearance of the daughter of a wealthy family who admires Shen Yan puts Lin Wan into emotional entanglement. The swinger character betrays the protagonist for profit, causing the protagonist to face a crisis of trust. But in the end, the two resolved their misunderstanding and worked together to help Tang Dynasty survive the crisis and gain love.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.