On Christmas Eve, a lavish party is underway inside a luxury estate.Alex, the estate's lowly maintenance worker, is publicly humiliated over a minor mistake by Victoria—the former president's daughter—and a group of wealthy socialites.Then the zombie outbreak begins.As the privileged guests become helpless prey, Alex discovers something impossible: the zombies will not attack him. Overnight, money, status, and power become meaningless.Armed with his survival instincts, combat skills, and a mysterious immunity, Alex rises from a humiliated worker to the leader of his own survivor base. The women who once looked down on him must now abandon their pride and trade skills, labor, and resources for the right to survive. But zombies are not the only danger in the new world.Ambitious survivors, traitors, ruthless mercenaries, and unknown forces hunting Alex's blood soon emerge. As the estate is repeatedly threatened by massive zombie hordes and brutal human conflicts, Alex becomes the one man everyone depends on.When the survivors finally set out for a rumored safe haven in Nevada, a mysterious transmission changes everything:“Possible complete antibody carrier identified.”“Capture the target alive.”The apocalypse has only just begun.