Discover the chilling tale of Matias Vul, a Grade 7 Manufactorum worker trapped in the cramped confines of HAB 77 alpha 9998 in the heart of Hive Ters. In the Warhammer 40,000 universe, daily life is an endless drudgery, a cycle governed by the Adeptus Administratum and unwavering faith in the God-Emperor. But when strange whispers begin to emanate from the walls of his living unit, accompanied by a nauseating, organic stench and growing cracks, Matias's rigid certainty crumbles. His personal investigation, with his neighbor Marcus, reveals a structural horror: the space between the walls is not insulation, but an organic cavity inhabited by unknown entities. From the bureaucratic paperwork of Form 777 delta to the urgent intervention of Investigator Vance and Inspector Kriber, follow how the Horror is identified, "contained," and forgotten by the Imperial machine. This tale explores the fragility of life in a Hive City and the price of duty in the face of the unspeakable corruption that lies dormant beneath the Imperium's Steel.