The film's story takes place in Huilonggang, a small town in the late Republic of China. This secluded place appears to be a paradise, but in reality, it hides a chilling mystery. In particular, the patriarchs of the town's four largest families have tragically died one after another. As people's investigation deepens, all evidence points to a terrifying castle on the edge of town. The castle's guardian will bring more bloody, bizarre and suffocating strange things to the place...