The #1 bestselling chapter book series of all time celebrates 25 years with new covers and a new, easy-to-use numbering system! This boxed set is the ultimate gift for any Magic Tree House fan. When Jack and Annie discover a mysterious tree house filled with books, they never dream that it will take them on exciting adventures around the world and throughout history! The story begins with Dinosaurs Before Dark, when Jack and Annie are whisked back to the prehistoric past. With a total of twenty-eight adventures, kids will never get tired of traveling the world and completing missions with their new friends Jack and Annie.