In the ashes of the Horus Heresy, the Raven Guard was nearly destroyed. The Primarch Corax used forbidden arts to reshape the Legion. This group of Space Marines wearing shadow armor became the gods of death who raided behind enemy lines. They lurk in the darkness, tear apart the Chaos front with precise ambushes, and use the blades of loyalty and revenge to guard the last light for the Emperor in the war-torn galaxy.