Pax Helmawr

Beneath the towering spires and smog-choked skies of Hive Primus lies the Underhive; a brutal, lawless expanse where life is cheap and survival is everything. Gangs clash for territory, resources, and power, and only the strong, or the cunning, endure. The air is thick with the scent of chemical runoff, and danger lurks around every corner. This is a world of violence, ambition, and betrayal. Welcome to Necromunda’s Sector Ɣ-5, colloquially known as “the Sumpslum.” If you’re smart, you’ll learn fast. If you’re lucky, you’ll die quickly. And if you’re tough enough, you just might rise to the top.

For a time, one name reigned supreme in the Sumpslum: Charter Master Gundren Pebblebrand of the Cuprite Corp. His brutal efficiency and iron grip secured his dominance, culminating in the infamous Council of Lesser Houses, where he cut down two rival gang leaders in a single duel, cementing his clan’s control over Sector Ɣ-5. Under his rule, the Cuprite Corps controlled the underhive’s black markets, back-alley surgeries, and high-stakes gambling rings with ruthless authority.

When Gundren vanished, the illusion of order collapsed. Every faction moved to fill the void, and the Enforcers were forced from quiet oversight into open intervention.

What followed became known as Pax Helmawr; a Palanite campaign meant to pacify the sector, and which instead exposed how little anyone truly understood it.

The first sign that something had gone wrong came not from gunfire, but from the deep. A distorted vox transmission, soon dubbed the ghost signal, began bleeding out of the Grotto, a filth-choaked refuse site, under quarantine by order of Scrutinator Renza Aloysia. When fragments of the signal were finally decoded, its source stunned the Sumpslum: Gundren Pebblebrand, alive, entombed within an archeotech vault far below the streets.

The message was simple. He had found something. He would reward those who freed him.

Gangs raced into the depths to crack the vault and earn Gundren’s favour, and access to the artefact he claimed to possess. None reached it unopposed. The tunnels leading to the Grotto filled with shambling figures that should not have been moving at all: missing scavvers though dead, bodies that rose and fell without rhythm or will. The Meteoric Strikers claimed Gundren and the prize, and the shambling horrors of the Grotto were quietly forgotten. Attention drifted. Whatever lay beneath would be a problem for another day.

Elsewhere, power continued to consolidate. The Silverstar Forgers, wealthy and influential, seized the Gloamways and did the unthinkable; they built. Power, water, habs, and trade flourished where only rust and darkness had existed. “Nightfall” Bail Bonds swelled in number.  With no single gang able to claim dominance, Precinct-99 declared themselves the sector’s peacemakers. Captain Todd rose in reputation, earning scars, honours, and a legend that would soon follow him beyond reason.

The campaign ended not in the underhive, but in the wastes.

The Ash Canyon Express, carrying Gundren Pebblebrand and his sealed cargo (designated Null-Cache 9C) ran through Storm Zali under fire. The battle aboard its carriages was brutal and chaotic. Nomad helamites swarmed. Fighters were dragged screaming into the storm. Survivors spoke of enemies that moved with inhuman purpose, that fought not for loot, but for unknowable goals.

The train emerged. Gundren survived.

Null-Cache 9-C did not.

It vanished into the storm, carried off by shapes no report has satisfactorily described. Captain Todd was thrown from the train and presumed dead, only to be recovered days later—alive, changed, and unwilling to speak of what he saw

In the cycles that followed, Sector Ɣ-5 began to fail quietly.

Sub-sectors went dark. Vox channels fell silent. People disappeared. Some who returned came back subdued, devoted, wrong. Beneath the Wailing City, power signatures flickered where no infrastructure was recorded. Tunnels no longer matched their maps. Doors sealed for decades stood open from the inside.Each report, taken alone, was dismissed as underhive decay.

Taken together, they painted a picture the Enforcers did not like.

Precinct-99’s presence increased. Checkpoints became permanent. Curfews were announced, enforced, and expanded. Gangs found old routes sealed and new laws written overnight. Arrest quotas rose. “Protective custody” became common language. Officially, the sector was being stabilised.

Unofficially, it was being locked down.

Whatever was lost with Null-Cache 9-C was classified beyond reclamation. Whatever followed in its absence was deemed a secondary concern. The immediate threat, the Enforcers declared, was the Sumpslum itself; its gangs, its defiance, its refusal to behave.

Orders came down from above. Reinforcements were promised. The language of Pax Helmawr gave way to something colder, more final.

A full-scale occupation was now inevitable.

Armoured patrols are massing. Holding facilities are being expanded. Old precincts, long abandoned, are slated for reactivation. And somewhere beneath the sector, far below the reach of vox, warrant, or law, something continues to dig, to build, and to watch.

For now, it remains unspoken.