This series of 4 adventures in the Pathfinder Modules range takes place in the town of Falcon’s Hollow in Paizo's Golarion setting. The modules can be run as a single campaign arc, with the events of each adventure leading into the next; it is also possible to run each as a standalone adventure.
The scenarios take place in the following order:
D0: Hollow’s Last Hope by Jason Bulmahn & F. Wesley Schneider
D1: Crown of the Kobold King by Nicolas Logue
E1: Carnival of Tears by Nicolas Logue & Tim Hitchcock
D1.5: Revenge of the Kobold King by Nicolas Logue
D4: Hungry Are the Dead by Tim Hitchcock
N.B. Perhaps confusingly, Pathfinder Modules D2 & D3 are not set in the same location and are not part of this plotline, as the letters denote the type of module (E is for event-based and D for dungeon).