In New York, mysterious murders, with satanist relans, begin to target certain people. The two best inspectors of the moment are sent on the tracks of the person in charge. By saving a young woman from a mysterious and powerful assailant who fled, they discover that the person responsible for all this would be the ex-boyfriend of the woman, who wants revenge. The young psychopath find an old satanist book that allows him to call from hell a powerful demon reaper who is forced to obey him. Can the police really believe in such a story ? Can they believe in the innocence of the young woman? And if all of this is true... can they really stand up to an envoy from Hell !?
