Two years ago, Tom's younger brother, Josh was kidnapped. Josh has been missing ever since. Tom saw who took him. Problem is - nobody believes him. In fact, most people think he's mad. That's because Josh was taken by creatures who aren't meant to exist. Creatures from another realm - fairy creatures that only Tom can see. In the fairy realm known as the Unseen Country, Flynn, an apprentice fairy who is in danger of failing, stumbles upon a conspiracy that could mean the downfall of both worlds. Together, the friendless boy and the fairy who can't fly need to rescue a boy from a fate worse than death. And save both worlds from something even worse.