An American writer Thomas, who lives in Macau and is researching for a supernatural book when he uncovers dangerous information about a powerful casino boss's cult religious secret. Fearing for the safety of his family when the casino boss detects what he knows, Thomas and the family try to escape through a remote border but get stuck at a nearby hotel for a night. Thomas mysteriously blackouts and wakes up with his wife dead and daughter missing. Believing he is the victim of a curse, he enlists the help of a young psychic to find his wife's killer only to discover that he might have been possessed by a dark force and committed the crime himself.