Eight-year-old Jack and his younger sister Annie find a magic treehouse. Each book in the collection takes them to a different place and time. (Tonight on the Titanic) Jack and Annie are in for an exciting, scary, and sad adventure when they are whisked back to the decks of the Titanic. (Buffalo before breakfast) Hello buffalo! That's what Jack and Annie say when the tree house whisks them and Teddy, the enchanted dog, back almost 200 years to the Great Plains. (Tigers at twilight) Tigers in trouble? That's what Jack and Annie find when the tree house whisks them and Teddy to a forest in India. (Dingoes at dinnertime) Wildfire! That's what Jack and Annie are up against when they are whisked away to the land of Australia. (Civil War on Sunday) Cannon fire! That's what Jack and Annie hear when they arrive at the time of the American Civil War. (Revolutionary war on Wednesday) I tis a dark and snowy night when Jack and Annie are whisked back to colonial times. (Twister on Tuesday) An adventure to blow you away! That's what Jack and Annie get when they arrive in the 1870s. (Earthquake in the early morning) An adventure that will shake you up! That's what Jack and Annie get when they arrive in California in 1906.