In 930.M41, the forces of the infamous Necron Overlord Imotekh the Stormlord, Phaeron of the powerful Sautekh Dynasty, descended upon the frozen plains of the Imperial Ice World of Schrödinger VII. The Necrons drove the local defenders to the shelter of the labyrinthine cryonite mines, but were unable to prevent the planet's Astropathic Choir from despatching a distress hymnal. A counterattack swiftly arrived in the form of a Black Templars strike force under the command of Marshal Helbrecht. Imotekh was not caught by surprise so easily, and had already shifted his undying Necron armies into a formidable defensive configuration.