Andy and Terry live in a treehouse. But it's not just any old treehouse, it's the most amazing treehouse in the world! This treehouse has thirteen stories, a bowling alley, a see-through swimming pool, a secret underground laboratory, and a marshmallow machine that follows you around and automatically shoots marshmallows into your mouth whenever you are hungry. Life would be perfect for Andy and Terry if it wasn't for the fact that they have to write...

Martin participates in his school's parade, learns how to draw Zip Rideout from the comic book's illustrator, and rethinks his dream of becoming an astronaut.

"When Astrid and her fellow Shooting Stars build a rocket, Astrid is hoping to impress guest helper, Lana, to score a tour of Space-E headquarters, but when she and her classmates discover Lana does not know much about rockets, Astrid is unsure if she should speak up"--Title verso page.

"Andy and Terry live in a 91-story treehouse. (It used to be a 78-story treehouse, but they keep getting ideas for new stories!) It has a submarine sandwich shop that serves sandwiches the size of actual submarines, an air-traffic control tower, a human pinball machine, a spin-and-win prize wheel, a giant spider web -- with a giant spider! -- and a big red button, which they're not sure whether to push or not because they can't remember what it does....

"Andy and Terry live in a 117-story treehouse. (It used to be a 104-story treehouse, but it just keeps growing!) It now has a pajama-party room, a water-ski park filled with flesh-eating piranhas, an Underpants Museum, a giant-fighting-robot arena, and the Door of Doom (don't open it or you'll be COMPLETELY and UTTERLY DOOMED!). For as long as Andy and Terry have been writing books together, Andy has always been the narrator and Terry has always been...