Eleven teenage boys find themselves suddenly alone in a post-apocalyptic world in which the only food they can find to eat is 'Skinny Wheats' crackers. They learn to live outdoors, where they are safer, but the weather is always hot, and they call their camp 'Paradise.' Their daily searches for food and people are dangerous and not always survived, but they are hopeful that if they found some adults the adults would know what to do... until they actually find some adults and realize they're better off on their own, and they are stronger than they knew. Meanwhile, something invisible leaves notes for the boys with clues on them, which they follow to a shocking discovery that could steer them in an entirely new direction.