Located deep within the glacial fields of Betalis III's eastern continent, Relay Station NX87-04 formed part of the global surveillance network that kept permanent watch over the Ice world's vast uninhabitable wastelands. That it had functioned without issue for centuries in such harsh conditions was a testament to the consummate skills of the Adeptus Mechanicus tech-priests who had seeded the planet with scores of such installations during its transformation into an Imperium mining colony. On the eve of its four hundred and fifth year of perfect operation the relay station abruptly ceased transmitting.