When an old beggar shows up filthy and injured on the doorstep of the Augustana Pathfinder Lodge in Andoran and demands to be recognized as Andoran's one true Emperor, Venture-Captain Wallace is inclined to chase him off. But when the old beggar reveals a wayfinder and tells a tale of demons and portals to another world beneath the streets of Augustana, Wallace summons you from Absalom to investigate. Will you make it through sewers, swarms, and sanctuaries to uncover the truth or will the dangers of the Augustana underworld consume you forever?