At the beginning of the founding of New China, war continued to rage in Songjiang County on the banks of the Songhua River in Northeast China, and undercurrents surged. Weird prophecies that have been circulating among the people for many years have come to light, strange bells of the City God's Temple have been ringing one after another, and bizarre and bloody murders have occurred one after another. The deceased died in strange ways, with mysterious snake-shaped marks on their bodies, which implicates the Five Immortals Sect, a cult that has been rampant in the Northeast for hundreds of years.
Lu Yuanshan, the head of the Investigation Section of the Public Security Bureau, has been responsible for his father's unjust case since he was a child. Years ago, my father was slandered as a traitor and disappeared in the fire at the Chenghuang Temple, leaving only incomplete files and unsolved mysteries. After the bizarre murder occurred, all clues pointed to the secret case of the Five Immortals Sect that his father was involved in back then, which also brought to light the grudges that had been buried for ten years.
Under the guise of the Fox Yellow White Willow Gray Fairy Family, the Five Immortals actually colluded with the Japanese invaders and Kuomintang enemy agents, secretly engaged in assassinations, drug trafficking, conspiracy and rebellion, controlled underground forces, and attempted to undermine the new people's political power. Hidden beneath the City God's Temple is the Heavenly Snake Order, the most precious treasure of the town, which records the list of all core personnel and collaborators. Once it falls into the hands of the evildoers, the situation in the Northeast will surely be turbulent.
During the investigation, the mysterious female doctor Shen Wanjun colludes with the evil drugstore owner, and former detectives who hide their identities appear one after another. It is difficult to distinguish the true from the false and is surrounded by dangers. Teammates are in danger one after another, and clues are reversed layer by layer. Lu Yuanshan is repeatedly involved in murderous plots, and step by step he uncovers the conspiracy of the cult and the blood feud of his family. He unexpectedly learned that his father had not passed away. He had been hiding behind enemy lines incognito for many years, silently guarding the secrets of his family and country.
The villain leader covets the treasure, sacrifices innocent people, and uses sorcery to cause chaos. In the end, Lu Yuanshan joined hands with everyone to launch the ultimate showdown in the underground palace, crushing the enemy's subversive conspiracy.
