When Su Jin perishes in the apocalypse, fate grants her a remarkable rebirth—thrust back one month before civilization's collapse. Armed with knowledge of the impending catastrophe, she frantically accumulates supplies while her skeptical family questions her sanity, convinced her marriage has unraveled her mind. They scheme to expose her "worthless" husband, unaware of her desperate preparation. But when the world shatters overnight, their passports and savings become worthless paper. Only then does her family recognize Su Jin's extraordinary foresight that might ensure their survival. While Su Jin fortifies their refuge, her husband leads an expedition through the ravaged city with his increasingly attractive team members—now exhausted after losing their way 212 times in pursuit of the woman he cannot live without.