Halloween is banned in Walker Falls because some goth kid put a curse on the town back in the 1980s, and even though there's no proof whatsoever that the curse is legit people won't so much as set out a single jack o' lantern for fear that he'll return and... I dunno, make them listen to Christian Death or something. One day though this business guy decides to put together a big Halloween whatsit to impress some investors, and suddenly a huge mountain of pumpkins appears in the middle of town and one of them falls on Doc Brown and kills him. Now, if this was a story in a Charlton comic book that would be the nonsensical "twist" ending, but in this case the raving stupidity is just beginning. First, Doc Brown comes back from the grave to save some or all of the following:

Halloween
His family's chocolate factory
The local economy
His grandson's relationship with his dad
The grandson's chances to get laid

Then a dismembered hand that's controlled by fireflies starts making the rounds, a G-rated zombie invasion goes down, and finally the dead goth kid shows up and reveals the most far-fetched cover-up in movie history. None of it makes any goddamned sense, especially the title. Who, exactly, is the "good ghoul gone bad"? Having a stupid pun as the name of your movie is bad enough, but if you absolutely must go that route at least pick one that applies to the story, you fucking morons. Watching this is like opening your Halloween bag and finding out that, instead of candy, everyone on the block gave you AIDS.