@Azeriath It's an indirect sequel to Kingmaker. Which means, you don't have to playe Pathfinder: Kingmaker to understand what's happening, but some events of Kingmaker may be mentioned (not very often), and there are some cameos. But it's a standalone game with a new protagonist.
In certain parts of Golarion, the Halloween mood lasts forever! That's the Immortal Principality of Ustalav - a homeland of dhampirs and a place of gothic atmosphere.
Just look at these gorgeous dhampir commanders by @zencultist, @nan_ivel, @GrannyUlyana, and sketchblognko. http://pbs.twimg.com/media/FCyp5-FVcAEK3zc.jpg