From the introduction:
This is the story of our clan. Once a great nation, once a people whose weight shook the world, now only few, poor, starving, hunted and desperate. At it's peak, the nation ruled nearly half the known world, above and below ground. Even but a year ago the Clan numbered more than a hundred. Today, only thirteen remain. Our leader still wears the raiment of our ancient kings, the Diamond-Studded Suit, but long ago, longer than any can remember the diamonds were all cut out, leaving behind only gaping holes. Our past glorious, our present precarious, and our future seemed nonexistent until the youngest of the clan found and opened the first of the two Person-Shaped Doors, leading deeper into the ruins that are our last shelter. Legends speak of the dangers of the deep ruins, and of the two Person-Shaped doors, one leading into that danger and, on the other side, another, leading to a land of safety, of new beginnings. The way will be perilous, but it is the Clan's only hope.