The Parable Worlds

This unjust solar-system-spanning theocracy, controlled by a splinter group of the Ecclesiarchy was noted for its advanced nanotechnology and pharmacology, for they delved deep into the body in search of apotheosis.

It was destroyed by a revivalist cult acting on behalf of Sebastian Thor because of the people's extreme immorality, for they cleaved to the principles of the hated Goge Vandire, and were destroyed long ago, leaving behind only navigation charts of old trade routes, no longer valid after the Great Storm, various fragmented records and scientific knowledge, which was recovered by the legendary Rogue Trader Pavel Heleanis.

Once a haven of darkness, the ten planets they controlled are now shattered beyond repair, each one a decaying hive world with titanic ruined edifices dotting the surface. The system is a byword for the sins of pride, the perils of heresy, and the inevitability of the Emperor's Justice, even in the Halo Zone.

Pavel managed to take what he was able to recover and synthesize several new curatives, which he sold for a king's ransom to the Mechanicus and Administratum. Only the nobility can afford it, but through this new treatment they can add decades to their already overextended lives.