When their evil neighbor, also known as the guardian of gloom, lays siege to Treeheart, a kid-forged sanctuary, turning them into pimply teenagers and sullen adults, the survivors of the onslaught call out for Bea Wolf--an unbreakable warrior with a penchant for mischief.

Jack and Annie experience a series of time-travel adventures.

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....