Mo Chung is a coward, but when drunk, becomes a gallant hero. Whether he knows it or not, his mission is to infiltrate his brother and sister-in-law's plot to blackmail the wealthy and not so charming Hing.

Ruffian Wu Song is on the way to Yanggu County to see his elder brother. He deceives for eating and drinking when getting by Jingyang Hill and then kills a tiger in drunk by accident. People surround and take him back to Yanggu County, and the magistrate names him as head constable. Wu's brother and his wife Pan are planning to make money from silly rich Ximen by cheating. They have to conceal the plan from Wu Song.