Andy and Terry, introduced in "The 13-Story Treehouse", have expanded their incredible arboreal residence by adding several exciting features, including a robot-controlled ice-cream parlor, a mud-fighting arena, an ATM (Automatic Tattoo Machine), and the Maze of Doom. Their publisher, Mr. Bignose, is demanding their next book, so the friends attempt to tell stories about how they met and how they first built their treehouse. They also have to cope...