What happens when the few who survive service in the Necromunda 44th Imperial Guard Regiment the "Spire Hawks" return home to Hive Primus? Their service unappreciated and forgotten, they band together as Rust Vultures, to survive and claw a living in the Underhive. Led by "The Captain", ex Captain Silas "The Heater" Sweeney, they choose a clanless and unaffiliated existence, hoping to slip under the radar of the authorities and the more powerful gangs.