Whenever a hero has line of sight to a previously unrevealed area of the map, it is immediately revealed by the overlord player. The overlord places monsters, items, doors, and other markers as indicated by the Quest Guide. Once the new area has been set up, the overlord player reads a bit of text from the Quest Guide that describes the new area. Play then resumes where it left off. For a more detailed description of this process, please see the cover of the Quest Guide.