Jiang Shuyu, the successor of traditional Chinese medicine, rescued the injured prince Ye Yucheng in the mountains. The two secretly fell in love and made a six-year agreement. Six years later, Shu Yu went to Beijing to find relatives, and reunited with Ye Yucheng, who was now the prince. After experiencing status differences, palace intrigues, and villain frame-ups, he finally won the hearts of the people and the emperor with his medical skills and character, overcame all difficulties, fulfilled his promise, and got married.
