Have you ever met a real live ninja? Jack and Annie do when the Magic Tree House whisks them back to ancient Japan, where they find themselves in the cave of a ninja master. Will they learn the secrets of the ninja? Or will the evil samurai warriors get them first? The magic tree house whisks Jack and Annie back to ancient Japan, where they meet real ninjas! In the ninja master's cave, they have the chance to learn the secrets of the ninja. But will evil samurai warriors track them down? Did you know that there’s a Magic Tree House book for every kid?