Lin Wei, a female doctor of emergency medicine, accidentally traveled to the Tang Dynasty. After encountering the injured border general Shen Jinghong, she relied on modern medical knowledge to resolve the emergency crisis in the military camp and then stayed in the military. The plot will revolve around her use of a combination of traditional Chinese and Western medicine to deal with injuries and illnesses in the military camp and border epidemics, and to solve the prejudice and identity suspicion of "women practicing medicine". At the same time, she and Shen Jinghong develop from mutual trust to falling in love, and jointly face the power conflicts in the military camp and border turmoil. In the end, Lin Wei not only found the value of life in the Tang Dynasty, promoted the medical progress at that time, but also joined hands with Shen Jinghong to protect her home and country, and harvested a sincere love that spans time and space.