The Magic Tree House transports Jack and Annie to the freezing Arctic. There, they must solve the final riddle to become master librarians. But it's not going to be easy - especially when they have cracking ice, a seal hunter, and a prodigious polar bear to deal with. Will they be able to solve the riddle before they get iced themselves?
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!