In Longyun Town in the early years of the Republic of China, it is said that after the town discovered a treasure, strange things gradually occurred and young girls were killed in their homes one after another. Under the pressure of the mayor, Captain Lin (played by Pang Jingfeng) of the patrol team decides to team up with Ji Lianying (played by Qian Xiaohao), a "righteous man in the rivers and lakes", and a death row inmate in order to find the real murderer and guard Longyun Town.

During the Ming Dynasty, power of the eunuch party dominated the ruling and opposition parties, and gangsters were rampant. Young bandit Jixian took the identity of Jin Yiwei, but was involved in the conspiracy to overthrow the dynasty.