Eight-year-old Jack and his younger sister Annie use the magic tree house to travel back to the Middle Ages, where they explore a castle and are helped by a mysterious knight.

The magic tree house takes Jack and Annie back in time to feudal Japan where the siblings learn about the ways of the ninja.

"Their magic tree house takes Jack and Annie back to retrieve a lost story in ancient Greece, where they witness the original Olympic games and are surprised to find what girls of the time were not allowed to do" --Title verso page.

Jack and Annie are transported by their magic tree house to the time of the Civil War where they meet Clara Barton.

"Their magic tree house takes Annie and Jack to Pompeii just as Vesuvius is about to erupt, and they must find a Roman scroll before everything is covered with burning ash" --Title verso page.

"Using their magic tree house, Jack and Annie travel back to the time of the American Revolution and help General George Washington during his famous crossing of the Delaware River."--

In a land lost in mist, in a time before time, there is powerful Sword of Light. Now Merlin the magician needs that sword for the good of all Camelot. He turns again to Jack and Annie for help. With only a rhyme to lead them, Jack and Annie set out on a journey filled with fabulous creatures. But can they solve the ancient riddle before night falls?

"Jack and Annie travel in their magic tree house to Elizabethan London, where they become actors in a production of A Midsummer Night's Dream and try to rescue a tame bear."--

"The magic tree house whisks Jack and Annie away to South America, where they must climb Machu Picchu to save a baby llama."--

"When the magic tree house returns it whisks Jack and Annie away to the Galapagos Islands, where they become World Turtle Experts and must save a tortoise in danger of an erupting volcano." --