In the continuing saga of Ragnar Blackmane, the Space Wolves come under attack from an ancient enemy: The Thousand Sons.
In a last-ditch attempt to stop them, Ragnar and his brothers launch a lightning strike counterattack on the Thousand Sons' base. Will the Space Wolves triumph, and can Ragnar retrieve the Spear of Russ from his nemesis, the Chaos Space Marine Madox?

Read it because
It's the culmination of six books (and ten thousand years) of battle, as the Thousand Sons return and Ragnar must face his past mistakes and redeem himself in the eyes of his Chapter.