Ninja Bros! Book 2: The Good Elements but the Bad Place

After the Ninja Bros leave Graystone Beach, they go to a place called Operistra to practice their moves and train. They find two things deep in the earth and the forest and they do something with it. They feel like something bad is happening so they search the whole place with the help of the Legendary ninja and they find something really, Really, REALLY Bad. Will they claim victory or will they not? Find out in this book!