Ghostbusters is a 1984 American supernatural comedy film, directed and produced by Ivan Reitman and written by Dan Aykroyd and Harold Ramis. The film stars Bill Murray, Aykroyd, and Ramis as three eccentric parapsychologists in New York City who start a ghostcatching business. Sigourney Weaver and Rick Moranis costar as a client and her neighbor. The Ghostbusters business booms after initial skepticism, eventually requiring a fourth Ghostbuster, played by Ernie Hudson but, when an uptown highrise apartment building becomes the focal point of spirit activity linked to the ancient god Gozer, it threatens to overwhelm the team and the entire world.
Misfit parapsychologists Peter Venkman, Raymond Stantz, and Egon Spengler are called to the New York Public Library after a series of apparent paranormal activities, where they encounter the ghost of a dead librarian but are frightened away when she transforms into a horrifying monster.After losing their jobs at Columbia University, the trio establish a paranormal exterminationinvestigations service known as Ghostbusters. They develop hightech equipment capable of capturing ghosts and open their business in a disused, rundown firehouse. At the Sedgewick Hotel, they capture their first ghost and deposit it in a specially built containment unit in the firehouse basement. Paranormal activity then begins to increase in New York City. The Ghostbusters become celebrities by containing it but are increasingly overworked and hire a fourth member, Winston Zeddemore. ........
Source: Wikipedia