Under the light of the full moon does a village gather, watching as the stars align and chanting well memorized verses. The sky splits open, and a voice, ancient and inhuman, speaks from the gash in reality. "There are interlopers. The ritual cannot be completed while they remain. Find them, and destroy them.". The crowd gasps, as the ritual only has a narrow window, once every one hundred years, and so their lord's return could well be stopped, for longer than any will live.
The hooded and robed villagers mutter and glare at each other, as they seek to fullfill their lord's bidding...
Welcome to Moonton. Try not to be sacrificed to the Old Moon.