As you might have figured out by now, Airborn is a book about flying. The majority of the book occurs around an airship, a creature that's meant to live its life in the sky, and a boy who wishes he had the capability of flight as well. Simple. Hold up a second, though—it could almost be a pun: Matt Cruse was born in the air. Air-born. Or it's just a good title about flying. You tell us.