The Emerald Tablet (Forgotten Worlds)

Benjamin is different from other kids?he can read minds and use telekinesis. But it isn’t until he’s sent to summer school on a hidden, underwater continent that he learns the truth. It turns out, Benjamin isn’t really human at all?and the powers he thought made him special, just make him normal. But then the mysterious Emerald Tablet chooses him as its champion and he’s thrust into a mission to save the world.