When Jiang Xinbai, the arrogant prince and chief constable who suffers from face blindness, secretly came to Heman to investigate the "Wuxiang case", he accidentally met Yan Nanxing, a wandering doctor who behaved eccentrically, grew up wildly, and changed his appearance every month. The two got to know each other after a fight. For the secrets hidden in each of them, they experienced a wonderful marriage of "three marriages and three separations" together, and finally joined hands to eliminate the disaster of Wuxiang.