Lewis Watt seems like an ordinary boy with an ordinary life. But then his mother disappears, leaving behind a mysterious letter as Lewis's only clue to her whereabouts. While investigating her disappearance, Lewis discovers the existence of a rainforest tribe made up of invisible people. What do they have to do with his missing mother? Did they really put a curse on his family? And what about the evil organization that will do anything to uncover the tribe's secret of invisibility? Lewis goes on a dangerous quest to find out the truth, and what he discovers is a secret that could change the course of history!