Spoken only in legends and even then in hushed whispers, PochÃ¢??Agoura is a name that sends children scurrying into their parents beds. Most people do not believe the old legends that the Dread Walker once subjected the entire world to an endless dark, a mindless machine of destruction that corrupted all in his path. But you see there is always a little fact in legends and myths and this is no different.
As with any eco system, there is a pattern of life and death. Unfortunately when there is death, there is often trapped emotions, suffering, and other things that “complicate” the process of transition. Add to this mix the presence of magic and gods and the chances of complications multiply. These complications are known to the mortals as Ghosts, Spectres, and various forms of material Undead.
After the PCs defeat (or force the rapid retreat of) a villanous necromancer/demon summoner, they discover a book. This book outlines how to summon a demon whose power increases according to the size of the summoning circle used to summon it. And after the PCs examine a map of the country, they find that the layout of the cities and roads match up with the required summoning circle. In fact, the final road that would complete the circle is currently in construction.
With anyone who can find out about the circle and the ritual to summon the demon able to somehow make the final road/line, and destruction of the cities and roads currently in existence out of the question (unless this is an evil campaign- that removes the moral quandary), how are the PCs going to solve this problem?