Park Gyura's meticulous preparations for global catastrophe finally prove worthwhile as he defends his fortified underground sanctuary against the chaos of a devastated world. A dedicated survivalist whose prescient warnings about civilization's collapse now ring prophetic, he must leverage every contingency plan to safeguard his refuge in this harsh new reality. With society crumbling around him, Park Gyura's underground bunker becomes humanity's last bastion of comfort and security—if he can hold it against mounting threats.