The Battle for France took many lives, among them the young soldier Jack Morrison. Lying alone in the trenches, an unlikely nurse comes to his aid and saves him from death. Years later, the war was won. Jack never saw the woman again, and returned home. But by then, he'd realized some things: one of which being he was immortal, free from death and aging. With little knowledge on the condition, he eventually left his home and discovered a different world, one of Hunters and monsters. When faced with the truth of his condition, his allegiance wanders between both sides.