Seven years ago, the Pathfinder Society acquired the Hao Jin Tapestry, a powerful artifact and gateway to a wondrous yet slowly disintegrating museum-like demiplane. Despite the sacrifices made to preserve the Hao-Jin Tapestry by one of the Pathfinder Society's most influential members, the realm's collapse seems inevitable. The Society has dispatched teams to high-value sites to salvage what they can of the historical treasures and knowledge, and the PCs are one of these first groups. However, their study of an ancient Tian site becomes far more complex thanks to not one but two burgeoning religions. It's up to the PCs to navigate this landscape riddled with hazards both extraplanar and political.