This book explains the history of the Orcs in their own world, as well as the history of the Burning Corps and the Dernas.
This book, whose story is actually a book that has a trawl, is written in the language of a trawl.
In this book, we see why orcs are wild and bloodthirsty creatures (they are not now) and we also read about the father of Tral and Goldan and the second Hammer.