Three professors - Aykroyd's Dr Stanz, Ramis' Dr Spengler and Murray's Dr Venkman - get thrown out of college and set up their own business. Given that their researches had been of a paranormal persuasion (well, Venkman's were more a ruse to seduce nubile students) this business takes the form of a ghost investigation and riddance service for those New Yorkers suffering from pest infestations of the supernatural kind. One such client is Weaver's attractive professional Dana Barrett, who becomes the unwitting recipient of Venkman's charms as the team try to evaluate what sort of entity is dwelling in her fridge.
Mixing National Lampoons and (toned down) 'Saturday Night Live' humour, imported via the stars and director, with an inventive but downright silly storyline with plenty of youth-market appeal Ghostbusters is a surprising success.
Stuffed with wisecracking, punning and essential deadpanning care of the film's most notable star performer Murray (who has such delivery down as a fine art), the film also packs in a half-decent narrative that sees the team (joined by black fourth member Hudson) realising that Dana's problem is more than a mere poltergeist. It's involves a doorway to hell in effect, and the threat of demonic evil being unleashed on the city.