How I would write the 13 Ghosts of Scooby-Doo finale movie

You're probably wondering why I wanted to do this I really hated the movie I want this to be a pretty decent finale Yes I made the 13th Ghost Talk and yes I added Scrappy because as much as we like to talk about how much we hate him he's still part of Scooby-Doo history whether we like to admit that or not also Scooby and Shaggy having PTSD about this I think works because they were actually dealing with real ghosts in the series I mean anybody would have PTSD dealing with that