During the Hongwu period of the Dayong Dynasty, Zhao Feng, the chief escort of the Weiyuan Escort Bureau in the capital, was an upright and experienced man. Once, the escort agency undertook the task of escorting precious medicinal materials to the border. They were attacked several times by bandits on the way and found that the bandits were ordered by corrupt officials. During the escort, she met Su Wan, the daughter of a border general who secretly protected the medicinal materials. The two teamed up to thwart the bandits' conspiracy, deliver the medicinal materials safely, and uncover the corrupt officials behind the scenes, making the Weiyuan Escort Bureau famous.
