Modern top secret agent Jiuyue accidentally time-travels during a mission and is rescued by farmer Ji Dahai and his wife. The harsh and calculating grandmother Hu Chunhua covets schemes, forcibly betrothing the solitary Jiuyue to the severely wounded scholar Ji Yiqing, while also conspiring with clansmen to scheme against and harass her at every turn. Possessing superior martial arts and exquisite medical skills, Jiuyue properly punishes the malicious relatives. Appreciating Ji Yiqing's gentle and upright nature, the two gradually open their hearts and accompany each other. When the family of a wealthy merchant in the county town falls into a crisis of severe poisoning, Jiuyue steps forward to detoxify it, earning silver to subsidize the household and heal her disabled elder brother. Husband and wife sharing one heart and studying diligently, Ji Yiqing steps up step by step through imperial examinations relying on his literary talent, weathering numerous storms and trials, and ultimately entering the court as an official to grow into a generation's chief councilor.