In fulfillment of an ancient pact between the Ordo Dialogus and the Adeptus Astartes, Sister Ajenta Kastarno helps the Black Templars decipher the hieroglyphs of the Necron dynasty of Khansu. After completing the operation “Inevitable Retribution,” the Templars’ warship intercepts an ancient message, sent—presumably—back in the days of the Imperium’s dawn.