Role playing story I just made up:
from the medieval times on a Circus is moving around: in each village / little town they take care for misery.
there are creatures, also vampires.
But.... what they do not kn ow is that one of the villages they left behind 100 years ago is not a normal town any more. from the 12 persons who survived in the old time they build a new town. Some outsiders from we-do-not-know-where mixed with the remaining people so their children would look human, but they are not... for 90% !
So, this is the battle-field.
The Circus being used to destroy lives, kills innocents and take some with them as new Circus members, and the old town with its not-so-human inhabitants.
The Circus is strong, but they never had such strong opponents who will fight for their place on Earth.....