During the Yu Dynasty, when the border was in turmoil and the government forced marriages, the down-and-out scholar Nan Wangshu unexpectedly took back Pan Yuxin, the "daughter of a guilty minister". When they first met in a broken house, she had the edge of a military general's daughter, and he had the forbearance of a scholar. From "cooperating to avoid trouble" to gradually developing feelings, the two of them bound their fate amidst suspicion and temptation.
Pan Yuxin defeated the gangsters and exposed the unjust case with his resourcefulness. Nan Wangshu obtained farming and water conservancy skills through the "Tongxin System", and the couple worked together to open up wasteland, weave, run schools and develop businesses. From dealing with the encirclement of the school captain Zhu Guicheng, to uniting with merchants from the Western Regions to open up the Silk Road, and then to resolving the border troubles in Beidi, they built cities to calm the people in troubled times, and turned the dilapidated border into a "cotton spinning town."
When the former "matching wife" became a royal wife, and a poor scholar was promoted to a border marquis, the smoke from Wangyuju blended with the beacon fire at the border, witnessing a couple in troubled times from the helpless start of getting a wife in the government to the legend of joining hands to stabilize the country - it turns out that the best marriage is never given by the government, but perfects each other through life and death together over the years.
