Why did they frame this film as a story in a book being read to two kids by their grandfather? Unlike "The Princess Bride" the story read by Grandad here is purportedly taking place in the real world, so presenting it as "just a story" makes it less believable. Maybe they planned to delve into this issue in the sequel, but revealing such a mysterious reason at the very end of this film would have been a better cliffhanger than simply showing us another story book with the sequel's title.