A long time ago, your ancestors did something very, very bad. Something unforgivable, which is yet to be pardoned or forgot. Now a curse rests upon your community.
It seeps into your life with insidious, creeping irregularity, never letting you relax or experience normality. A supernatural evil that has darkened your family tree for centuries. But no more. You have decided to break the curse, any way that you can.
There will be consequences.