Synopsis：An ordinary girl, Sari, is suddenly dragged into a perilous post‑apocalyptic world while on vacation and bound to a “Shelter Integration System.” The system grants her a single run‑down inn and a mission to open it, but sets no compulsory tasks or punishments—every upgrade is entirely up to her. Starting from two crumbling buildings, Sari slowly renovates and expands, turning the inn into the top safe haven in a deadly desert wasteland. As more survivors gather under her roof, watch how Sari calmly manages her shelter and carves out a way to survive in the apocalypse.