Ghostbusters

Peter Venkman, Ray Stantz, and Egon Spengler are parapsychology professors at Columbia University investigating the paranormal. Following their first encounter with a ghost manifesting at the New York Public Library, the university dean fires them and dismisses the credibility of their research. In response, they create "Ghostbusters", a paranormal investigation and elimination service operating out of a disused firehouse. They develop high-tech nuclear-powered equipment to capture and contain ghosts, although business is initially slow.