"Ben Gold lives in dangerous times. Two generations ago, a virulent disease turned the population of most of North America into little more than beasts called Ferals. Some of those who survived took to the air, scratching out a living on airships and dirigibles soaring over the dangerous ground. Ben has his own airship, a family heirloom, and has signed up to help a group of scientists looking for a cure. But that's not as easy as it sounds, especially...