Lin Wei is transported into the Great Yue dynasty and forced to take her younger sister’s place as the bride of Xiao Jing, the aloof Sixth Prince with little influence.
They form an alliance on their wedding day. She uses her medical skills to treat wounded soldiers, purifies salt through chemistry, and discovers corn and potatoes to present as auspicious gifts, helping Xiao Jing win the emperor’s favor and the people’s support. Xiao Jing goes from scrutinizing her to falling deeply in love. To the outside world, he is a prince plotting for power; with her, he becomes a fiercely protective husband who dotes on his wife. Their feelings deepen, and together they foil the Crown Prince’s schemes and put down the Third Prince’s rebellion. After Xiao Jing ascends the throne, he makes Lin Wei his empress and dotes on her alone. Together they introduce new policies, promote farming and education, and secure the borders, ushering in a golden age and writing the legendary story of an emperor and empress who share one life and one love.