Once more a threat has arisen that can only be answered by the most skilled, and unconventional, Blood Hunters. Heeding the call, 1st Lieutenant Kele-de Ann (Kai) McMahon steps up as the Earth Warrior to tend to the emergency. This time she is joined by one of her cousins - Samir Cooper - in the hunt, as they aid the Dine Nation in dealing with an ancient enemy who has not been actively heard from for several generations.