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.
The film centers around a Malaysian pharmaceutical company using a new virus to generate an epidemic. A secret organization, known as "The Leaker", discloses this information. After the suicide of the pharmaceutical company's son and a local reporter, the wife of the pharmaceutical company's owner leaves for Hong Kong. A Malaysian police chief , Hong Kong police officer, and journalist work together to locate her whereabouts.
In the silence of the night, the demonic wolf devours the moon, after which the lights of the Heavenly Pavilion go out one by one. Zhan Zhao, the "Imperial Cat", and Bai Yu Tang, the "Golden Mouse", work together to detect a series of strange deaths in Bianliang City and return the people to a peaceful life.
