Apocalypse: I have a super fortress in advance

Ray, an ex-FBI ace, lives quietly as a mechanic to stay with his family. Betrayed and ruined by his greedy wife and elites before the zombie apocalypse, he hides with his adopted daughter in a top-tier bunker. When disaster strikes, the privileged fall into chaos. To cure his infected daughter, Ray resumes his identity as the Silent Reaper and builds his empire in the wasteland.