The Magic Tree House whisks Jack and Annie to the decks of that ill-fated ship, the "Titanic". There they help a toddler find her way to a lifeboat before they, themselves, are in grave danger of becoming two more victims of the tragic event.
The Magic Tree House takes Jack and Annie back in time to the American Civil War. They meet Clara Barton, the famous nurse, and help take care of wounded soldiers.
The Magic Tree House whisks Jack and Annie back to Colonial America. They arrive just as General George Washington is planning the crossing of the Delaware. Before they know it, Jack and Annie are in a boat with the Father of Our Country as history is made!
Merlin has asked Jack and Annie to help on another Merlin Mission. This time they head back into history to Venice, Italy, in the 1700s. With the help of some new friends, a research book, and a mysterious rhyme from Merlin, the heroes will save the beautiful city from a flood!
Merlin the Magician will not eat or sleep or speak to anyone in Camelot. What can be done? The enchantress Morgan knows who to ask for help: young Jack and Annie of Frog Creek, Pennsylvania! The brother-and-sister team quickly head off in the magic tree house on another magical and historical adventure. Their mission: discover one of the four secrets of happiness.
Eight-year-old Jack, his seven-year-old sister, Annie, and Peanut the mouse ride in a tree house to the Amazon rain forests, where they encounter giant ants, flesh-eating piranhas, hungry crocodiles, and wild jaguars.