When eight-year-old Jack and his seven-year-old sister, Annie, join a group of nineteenth-century explorers aboard the H.M.S. Challenger, they learn about the ocean, solve the mystery of its fabled sea monster, and gain compassion for their fellow creatures.

Andy and Terry's incredible, ever-expanding treehouse has thirteen new storeys, including a watermelon-smashing level, a wave machine, a life-size snakes and ladders game (with real ladders and real snakes), a rocket-powered carrot-launcher, a Ninja Snail Training Academy and a high-tech detective agency with all the latest high-tech detective technology, which is lucky because they have a BIG mystery to solve; where is Mr. Big Nose???

Andy and Terry's amazing treehouse has thirteen new levels including a chocolate waterfall, a nonerupting active volcano, an opera house, a baby dinosaur petting zoo, Andy and Terry's Believe it or Else! museum, a not very merry merry-go-round, a boxing elephant called the Trunkinator, an X-Ray room, a disco with light up dance floor, the world's scariest roller coaster, and a top secret 39th level that hasn't even been finished yet!

Andy and Terry travel through time trying to save their treehouse from highly talented, angry ants and Inspector Bubblewrap the building inspector while rushing to meet their publisher's deadline.

Join Andy and Terry in their now 91-storey spectacular treehouse. They've added 13 new levels, including the world's most powerful whirlpool, a mashed-potato-and-gravy train and a human pinball machine. Why not try your luck on the spin-and-win prize wheel or hang out in a giant spider web (with a giant spider), or you can always get your fortune told by Madam Know-it-all or eat a submarine sandwich the size of an actual submarine while deciding whether...

"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....

"When Andy develops a severe toothache that prevents him from writing new jokes for their book, Terry uses their fantastical treehouse's money-making machine funds to purchase a Joke Writer 2000, with unexpected results."--

After school, friends meet in a secret treehouse in order to share their favorite books. Each episode dives into a different story using a different design with top children's books from around the world. Volume one of season one includes episodes 1-9.

After school, friends meet in a secret treehouse in order to share their favorite books. Each episode dives into a different story using a different design with top children's books from around the world. Volume two of season one includes episodes 10-18.

After school, friends meet in a secret treehouse in order to share their favorite books. Each episode dives into a different story using a different design with top children's books from around the world. Volume three of season three includes episodes 20-28.