In the Dayao Dynasty, Xiao Xiao, the eldest son of the general who ruled the country, and Su Yuning, the daughter of the prime minister, were childhood sweethearts and were privately engaged for life. However, the imperial power was jealous and organized a conspiracy. Everyone in the Xiao family was executed, and the Su family was exiled thousands of miles away. Under the deep palace game, the two were forced to marry separately, and they were separated from each other.
Fifteen years later, their children Xiao Chengyuan and Zhao Qingyan met in Jiangnan. When they met for the first time, the two recognized each other's identities from the tokens. Similar situations made the young pair cherish each other, and they cooperated tacitly when investigating the salt case. They even joined hands to fight against the conspiracy to usurp the throne amidst the turmoil in the court.
In the end, the new emperor granted marriage to the two. This marriage resolved the decades-old fate of the two families and allowed the unfinished love affair of the previous generation to continue in the children. At the grand wedding ceremony, the four parents looked at the newlyweds and finally smiled with relief.