After Lin Mo was reborn, he used the system space to stock up on goods crazily, and based on his old and broken home, he gradually upgraded it into a doomsday steel fortress. During this period, he slapped his ex-girlfriend and the rich second generation in the face, rescued his neighbor Grandma Chen, and gathered a group of capable survivors such as policewoman Li Xue. From building a one-person safe house, to developing a survivor base, to becoming the overlord of a party, and finally uncovering the secrets of the doomsday.