New York Times-bestselling team Andy Griffiths and Terry Denton invite readers to come hang out with them in their 143-story treehouse-the eleventh book in the illustrated chapter book series filled with Andy and Terry's signature slapstick humor! Andy's been a bit stressed out lately, so Terry decides the perfect way to relax would be to head up to their new camping ground level for a much-needed vacation. But it turns out to be not quite as relaxing as planned.

• Two best friends having a good time "solving" problems and making mischief.
• The Treehouse hit the New York Times bestseller list with the publication of The 52-Story Treehouse and keeps going strong!
• Great for fans of Gravity Falls and Phineas and Pherb-and a great bridge from Diary of a Wimpy Kid series to Chapter Books.