Grandpa is Jack?s favorite person in the world. It doesn?t matter that he wears his slippers to the supermarket, serves Spam a la Custard for dinner, and often doesn?t remember Jack?s name. But then Grandpa starts to believe he?s back in World War II, when he was a Spitfire fighter pilot, and he?s sent to live in an old folk?s home run by the sinister Matron Swine. Now it?s up to Jack to help Grandpa plot a daring escape!