Inkubus is about a demon who walks into a police station through the front door with a severed head in its hand. This police station is scheduled to be condemned and the police officers will be the last to serve in this horror movie. Robert Englund, the original Freddy Krueger, plays our demon incubus who is immediately restrained by the officers. Inkubus shares with them a time 13 years back when he was almost caught by the police for a gruesome murder. Inkubus requests to speak with the detective who almost ended his reign of supernatural horror. As the story progresses, Inkubus seemingly gets increasingly powerful and leads everyone to believe that they are caught in his trap as mere play things ready to be slaughtered by this demon.