Luckless man, Keung, who takes a job as a security guard in a shopping mall to make ends meet and provide for his pregnant wife. Keung’s happiness at finding work soon turns sour after a series of strange events kill several of his colleagues in grisly, inexplicable fashion. Aided by a mysterious priest, he investigates the seemingly supernatural deaths, only to find that the evil forces following him around may have their sights set on his wife and unborn child.