Fear is their weapon. Driven by an uncontrollable hatred of the False Emperor, the Night Lords roam the galaxy, spreading terror and inventing new ways to take revenge on the murderers of their primarch. Dark paths lead them to an alliance with the Red Corsairs. This alliance, cemented only by the presence of a common enemy, is bizarre and fragile. Together with these renegade pirates, the Night Lords attack the fortress-monastery of the Imperial Chapter of the Adeptus Astartes in order to steal the gene-seed of the Space Marines and doom the Chapter to a slow death.