In the middle of the Ming Dynasty, natural disasters plagued the area, and the victims in northern Hunan were waiting for the 300,000 taels of relief money issued by the court. Help! The 300,000 taels of gold were transported, but were taken away by a mysterious person and disappeared. The whole incident shocked the government and the public! The one who could turn the tide was Li Gexiao (played by Huo Jianhua), who was unemployed and drunk all day long. No one knew that this vicissitudes of life and depravity was the "First God of Jinyiwei" that made the five lakes and sixteen gangs terrified, but he became alcoholic and dissolute after being framed and losing his beloved wife. In the face of justice, Li Gexiao cheered up again and promised his best friend who had not seen him for many years to return to the arena to find relief money. Together with Yan Sanniang (played by Liu Shishi), who is good at light work, He Xiaomei (played by Ma Tianyu), who is good at disguise, and Chaihu (played by Shi Xingyu), who is good at martial arts, they formed a group of four knights "Yizhimei" to travel the arena. Since then, the four people of "Yizhimei" have been connected by life and death, using plum blossoms as a memory, adhering to justice, being active among the people, and solving difficult cases for the people...