When parapsychic abilities began manifesting, martial artists found that their discipline from years of training provided them with the acumen and ability to channel and control the unexpected powers that now flowed from their fingertips.
A brotherhood of three warriors who fancy themselves to be the strongest men in all the world.
A plague has hit the local area.
In humans it affects only the most vulnerable, the children and the very old, and even than it's little more than a summer cold. 24 hours of sniffles and then it's gone, barely noticeable really.
To sheep however it is fatal and the whole economy of the area is in serious trouble. If this keeps up the area could well be facing famine.
Somebody (enter the PCs) must find the rare herbs needed to make a cure.