In the third year of the apocalypse, the protagonist is betrayed by a traitor as an undercover agent of the resistance organization, and awakens his immortality while escaping by feigning death. Awaken the [Civilization Fire] system in the radiation ruins, obtain infrastructure points by completing dangerous tasks, and upgrade the dilapidated air raid shelters into steel fortresses. On the surface, he is a homeless man who picks up garbage. Secretly, he uses an underground farm to feed 100,000 survivors and uses a homemade quantum computer to crack the zombie virus. When the former betrayers came to plunder with their supernatural legion, the protagonist activated the electromagnetic gun array to blast them into pieces, and finally established a new civilization of mechanical ascension on the ruins.
