The Magic Tree House whisks Jack and Annie off to the mountains of Africa. There they run into a huge mountain gorilla! At first they don't know whether they should shake hands or turn tail. But the ominous-looking creature turns out to be surprisingly gentle. Not only that, the gorilla may be able to help them learn their next bit of magic, which Morgan has challenged them to do.
The 'Magic Tree House' series follows the adventures of 8-year-old Jack and 7-year-old Annie, a brother and sister who find a mysterious tree house filled with books in the woods near their home. The tree house belongs to Morgan le Fay, a magical librarian from the time of King Arthur, who sends Jack and Annie travelling through time and space to help free her from a spell. Each book is its own adventure, and with each book Jack and Annie move closer to becoming Master Librarians themselves!