Liu Yu, a top physics student in the twenty-first century, is transported to the Great Xia Dynasty after a car accident, where she becomes the legitimate daughter of the powerful Grand General Who Guards the Nation.
The original owner was spoiled and naive, trapped in a gilded cage. Liu Yu, by contrast, is calm and clear-headed, well versed in political intrigue. At a glance, she sees the fatal danger facing the General's residence: its achievements are so great they threaten the throne. Under the currents of court politics, treacherous ministers frame the family and the emperor grows suspicious. The once-loyal family that protected the nation is falsely accused overnight, and more than a hundred members of the Liu clan are exiled to the desolate southern frontier.
At this desperate moment, Li Shuyi, a gifted scholar from a humble family, is willing to abandon his prospects in the imperial examinations and give up the honors he has spent half his life pursuing to follow her to the land of miasma and pestilence. Together, they use scientific knowledge to improve farming, tea production, and fresh-fruit trade. Starting with nothing in a place of desperation, they gradually build a commercial empire spanning north and south, quietly gathering strength.
Chuan Yu, a formidable and cold-blooded martial artist, lies in wait. The patient Prince Jin, Xiao Heng, secretly joins their alliance, while forces from all four directions converge beneath the surface. When flames of war once again sweep the realm, they join forces, bringing together wealth, military power, and the strength of the martial world to overthrow the decaying dynasty and help the new ruler establish an era of peace and prosperity.
When victory is won and wealth and glory are theirs for the taking, they resolutely lay down their power and retire to the southern frontier. There, they devote themselves to tea and fruit cultivation, establish schools, and protect the children of humble families, continuing the most moving tale of steadfast love amid the warmth of everyday life in a time of turmoil.