Bulgaria serves as a crucial but imagined link in the Plan’s chain of secret groups. In the account constructed by Casaubon, Belbo, and Diotallevi, the Paulicians’ supposed successors in Bulgaria were to connect Germany with Jerusalem; the predicted failure of that connection in 1824 helps explain why the Plan’s supposed revelation was never completed.## Place in the PlanThe novel introduces Bulgaria within the characters’ reconstruction of Paulician history. Diotallevi describes the Paulicians as a movement that expanded from the eighth century, became a political force, and spread toward the Euphrates and the Black Sea. He says that some communities persisted into later centuries, while others were converted by Jesuits; he places surviving communities in the Balkans or nearby. This account supplies the historical-looking background for the Plan’s proposed route through the region.## The Missing LinkIn the group’s interpretation of the Provins message, Bulgaria is the stage between Germany and Jerusalem. Diotallevi calls the Bulgarian Bogomils the natural successors of the Paulicians, while noting that the imagined Templars of Provins could not have foreseen Bulgaria’s later subjection to Ottoman rule. The characters use that historical change to make a failed rendezvous seem plausible: if the connection to the Bulgarian group broke, the next group, supposedly based in Jerusalem, would become unreachable.## The Imagined TimetableDiotallevi sets out a sequence of six places—Portugal, England, France, Germany, Bulgaria, and Jerusalem—paired with dates running from 1344 to 1944 in intervals of 120 years. Within this invented chronology, the German-to-Bulgarian appointment falls in 1824. The sequence turns Bulgaria into the hinge of the Plan’s narrative: the missed meeting would interrupt the chain, while rules limiting each group’s knowledge of the others would prevent the participants from repairing it.## From Geography to ConspiracyThe group later folds Bulgaria into its account of the Protocols of the Elders of Zion. Belbo attributes the text to the supposed Paulician branch, which he portrays as politically reactionary and hostile to the Jerusalemite groups. In the same speculative narrative, Rachkovsky alters material derived from earlier political writing by substituting Jews for Witte, and the forged text circulates through a chain of intermediaries. Bulgaria itself is not presented as the proven origin of this history; its function is to give the invented Plan a geographical and historical junction through which the characters connect religious sects, political rivalry, and anti-Semitic fabrication. The contrast between their confident explanations and the assembled, contradictory sources exposes how a map and a timetable can make conjecture appear like evidence.