Forty-three days after defeating the Regional War, Koh Jian Hao faces a new threat: the Architect Fleet arrives in 47 days to judge whether humanity deserves the System. With his father's Backdoor depleted and Entity Integration at 67% — the corruption threshold — Jian Hao journeys to the Carpathian Vault to secure Clearance 4/7 from Warden #4 Dragos. But Consortium 2.0 has regrouped under Russian oligarch Volkov, and betrayal festers within Jian Hao's own party. Priya's Bridge Walker abilities make her a target. Victor Chen's loyalty hides a deadly secret. And the Entity's truth — that the System was built as first contact protocol, not containment — changes everything. In the final confrontation, Jian Hao must choose: destroy the Consortium, submit to the Fleet, or forge a third path that will evolve him from Regional Warlord to System Steward. THE CARPATHIAN VAULT is the third and final book in The Warlord Era. A LitRPG progression fantasy about stewardship, first contact, and the weight of becoming what the System was built for.