A handful of survivors from the mining colony on Caldera limp their way to the nearest inhabited system, desperate to repair their battle-damaged old asteroid-cutter, the Omicron Rex. Unfortunately, this lands them in a quarantined system, on a crumbling orbital colony that was once a luxury resort full of themes parks and hotels, now inhabited only by vagrants, smugglers, and pirates. The crew must warn the rest of humanity about the coming alien threat, but the outlaw colony is intentionally cut off from civilization, with no communication relays in place at the wormholes. The Rex crew face a struggle to make others believe the threat, and try to rally support and raise an organized defense in the anarchic, crime-ridden colony before the aliens arrive. Because the alien fleet is on its way, in search of worlds to ravage, resources to seize, and fresh meat to eat...and they leave only ruins, bones, and scorched earth in their wake.