Parapsychology professors Peter Venkman, Raymond Stantz, and Egon Spengler find themselves unemployed and decide to set up shop as a unique ghost removal service.Three odd-ball scientists lose their cushy jobs at a New York City University where they studied the occult. The decide to set up shop in an old firehouse and become ghostbusters, trapping pesky ghosts, spirits, haunts, and poltergeists for money. They wise-crack their way through the city, and stumble upon a gateway to another dimension, one which release untold evil on the city. The ghostbusters are called on to save the Big Apple.