Of all the Legions of Astartes, the most mysterious and unpredictable are the White Scars of the Primar of Jagatha Khan. Born in a civilization that recognizes only honor, speed, and frightening devotion, even during the tearing of the galaxy on the part of Heresy Mountain, it was unclear whose side the White Scars would take. In that war, both sides hoped that the White Scars would take their side. But now that the Alpha Legion has made an inexplicable and gratuitous blow to the troops of the White Scars and Space Wolves, Khan will have to decide once and for all whether he will fight on the side of the Emperor or the Master of War. Or he will not fight on anyone’s side...