In the early years of the Republic of China, Jiushu Master and Apprentice in Jixiang Town practiced medical treatment, and there were successive murders in the town. The victims all died of certain diseases after being bitten. It was finally found that the murderers were some poor people called witch werewolves who hid in the mountains in order to avoid the disaster.

In the early years of the Republic of China, Uncle Jiu, with his two apprentices, is involved in a bizarre murder case when a centuries-old blood coffin sinks into the Yellow River.