Sinjeon-ri has a population of only about 8,000. While on the surface, it appears to be your average, every day small town with nothing going on, Sinjeon-ri holds many mysteries. Within the past 20 years, over 100 people have gone missing and no one talks about it. Every single case is closed after only a few months with police claiming the victims left town, only to never be heard from again. What's even more strange is that exactly a year after a person has disappeared, everyone seems to forget who they were or that they even existed to begin with - even family members. Where are these people going? Why doesn't anyone remember them..?

To the majority of the world, non-humans do not exist. No one truly believes in ghosts and demons, do they? However, the population of Sinjeon-ri seem to believe in superstitions and traditions more than most places. Be that because it's a small secluded town or because of the odd happenings, no one really knows. One of the most prominent families in Sinjeon-ri, the Sam (삼), have a long lineage of shamans and are highly respected by the community. Sam Hwa-ja, the current head of the Sam family, is Sinjeon-ri's mayor and most respected shaman.

The most recent missing person in Sinjeon-ri is Kwon Jae-hyun, Ji-ho's older brother.