Yun Shu, a village girl, rescued Gu Jingchen who had lost his memory and took good care of him in exchange for his promise. But after Gu Jingchen returned to the house, Mrs. Gu forced her to become a concubine because of her humble background. Yun Shu refused the concubine's request for 500 taels and left, using 20 taels to buy Shen Yan, who was actually the slave of Mr. Wei Xiaohou. The two fell in love, got married, and moved to Qingzhou. Gu Jingchen pursued her but was rejected. Yun Shu studied medicine to help the world, had children with Shen Yan, and finally let go of the past.
