Pressure Vault Seven is a failing deep-ocean reactor vault, its flooded corridors holding back thirty-one atmospheres of ocean pressure. When Pump Gallery Three loses pressure and a primary lock jams, a punishment-detail squad is sent below to restore reactor cooling before the geothermal tap overheats.

The squad crosses drowned corridors, balances across corroded gantries, and cuts through fused locks with a damaged plasma torch. But Fortress Bulls have already turned the lower levels into territory, battering walls, excavating brood chambers, scraping support pillars, and moving through human architecture like it was soft ground.

They do not hunt the soldiers. They simply do not care that the soldiers are there.

This is "Caught Between Hammer and Anvil" by Sascha Schmidt