In director Ivan Reitman's sequel, after waging a war on slime that cost New York City millions, the Ghostbusters --Venkman (Bill Murray), Ray (Dan Aykroyd), Egon (Harold Ramis) and Winston (Ernie Hudson) -- find themselves out of business. With new careers, the group reunites when an ancient tyrant preparing to return to the earthly domain targets the baby of Venkman's ex-girlfriend (Sigourney Weaver) as the new home for its soul.