Thirteen-year-old Fallon and her family have somehow found a way to survive despite a vicious plague that killed billions. Unaware of how powerful she is, Fallon takes up training with an experienced soldier who will teach her how to control the power inside her and fight for the world she wants to see. With danger at every corner and Purity Warriors who are out to find her and take her out, Fallon will have to become the leader that the world so desperately needs in Of Blood and Bone.