After the Massacre at the Drop Zone on Isstvan V, battered and exhausted warriors of the Iron Hands, Raven Guard, and Salamanders regroup on what, at first glance, seems like an insignificant world of death. Reflecting attacks by all kinds of monstrous creatures, allies who don’t trust each other find hope in the human refugees who tried to escape the raging war and were carried away by the winds of the warp. But while the Space Marines are carving out a shelter in the jungles of P yphos for the mortals, darkness is thickening around them—darkness that threatens to swallow everything…