Wang is a gloomy, cunning and avaricious noodle shop owner in a desert town in China. His neglected, sharp-tongued wife is involved in a secret affair with Li, one of Wang’s employees. A timid man, Li reluctantly keeps the gun his lover has bought to kill her husband. But Wang is watching their every move. He bribes patrol officer Zhang to murder the illicit couple. It seems like a perfect plan: the affair will come to a cruel, bloody but satisfying end or so he thinks. The equally wicked Zhang has an agenda of his own. As the plot twists, more blood will flow, and ever greater violence will erupt.

Ma Nan and Xiaoyu are a couple who have been in love for many years. Ma Nan bought a property in the suburbs, just in time for Xiaoyu's birthday. So he called his colleagues and friends and the party was held in a cheerful atmosphere. Next door to Ma Nan's house lived a couple who often quarreled. The unusually loud noise aroused the curiosity of party-goers. They went next door together to find out, but unexpectedly found a terrifying and bloody murder scene. The apartment, which was originally sparsely populated, seems to have turned into a huge haunted house. Flickering lights, shrill screams, and maddened murders. A plague-like virus spreads freely in the apartment.