Somehow both the only _Ghoulies_ movie with any sort of continuity and yet also the least related of the series. _Ghoulies IV_ takes place an undetermined amount of time after the first movie, and ignores the events of the second and third. It also doesn't have any Ghoulies in it. You know, the things that the franchise is named for. The only service that it does do for the franchise, is to be so bad that the first _Ghoulies_ movie is no longer the worst one.
_Final rating:★ - Of no value. Avoid at all costs._