For the lords of the north land is power. Therefore, the Nerthergrim now awoken and free to wreak its evil upon the world offers the promise of victory to those ruthless enough to accept its foul bargain. One ambitious lord eager for the chance to conquer and rule, succumbs to temptation and helps to free the skeleth eerie otherworldly beings who  merge with the bodies of their victory rule their minds and turning them in the remorseless in fillers.