The Ghostbusters franchise consists of American supernatural comedies, based on an original concept created by Dan Aykroyd and Harold Ramis in 1984. The plot follows a group of eccentric New York City parapsychologists who investigate and eliminate ghosts, paranormal manifestations, demigods, and demons. The Ghostbusters use a specialized set of equipment in the 1984 film, and all subsequent Ghostbusters fiction includes similar equipment to aid in the capture and containment of ghosts.