Urgle is not a good hunter; he's not good at much of anything, particularly being a big brother to Cubby. But he has no family to fall back on: Urgle and Cubby live among the Brothers of the Ikkuma Pit. One by one, generations of boys have been abandoned as babies by their mothers to fend for themselves in the Pit. They spend their lives struggling to survive in an all-boys village. They don't know what lies outside the Pit, because no one has ever ventured out and returned to tell about it. Until now. When a brother from the past comes back to Ikkuma, the group wants to know what he has seen since he left, and what he knows about why they have all been abandoned. But then Cubby goes missing. Urgle organizes a search party to find him, and the boys realize they're going to learn first-hand what the outside world is like. Are they prepared to learn the true story behind their exile?