The Crimson Hawks are an ancient and honored Chapter of the Emperor's Adeptus Astartes. Descendants of the noble Blood Angels, the warriors of the Crimson Hawks have stood guard over the Imperium for countless centuries. Now, though, they will be put to the ultimate test. A Black Crusade is rumored to be forming within the Eye of Terror, and the Crimson Hawks must prepare.

Verilius is a member of the Deathwatch, an elite organization of Astartes dedicated to fighting the xenos threat across the galaxy. For most, the Deathwatch service is an honor, but for Verilius, it is a punishment. Isolated from his brothers, and forced to fight beside those he despises, he will come to face the greatest challenge of his life, and make a fateful choice.