Synopsis
Newly escaped from Commorragh, Krom and his men are reunited with Ulrik and the rest of the Space Wolves. Temporarily joining forces with the Dark Angels, the Space Wolves land on a hive world to seek a renegade Space Marine who could hold a clue as to the current whereabouts of their missing Chapter Master, Logan Grimnar. But in the depths of a corrupt cathedral, the Space Marines discover foes both mighty and unexpected. Will the fragile alliance between their two Chapters endure?