"Andy and Terry live in a 91-story treehouse. (It used to be a 78-story treehouse, but they keep getting ideas for more stories!) ... Good thing there's so many fun things to do in the treehouse, because Andy and Terry get stuck babysitting Mr. Big Nose's three grandchildren for the day"--Back cover.

Who wouldn't want to live in a treehouse? Especially a 13-story treehouse that has a bowling alley, a see-through swimming pool, a tank full of sharks, a library full of comics, a secret underground laboratory, a games room, self-making beds, vines you can swing on, a vegetable vaporiser and a marshmallow machine that follows you around and automatically shoots your favourite flavoured marshmallows into your mouth whenever it discerns you're hungry....