After using her memories to multiply her wealth overnight, a woman contemplates how to survive the apocalypse safely. While lost in thought inside her RV, she discovers a hidden button that summons a fairy named Freya offering a pact to unlock the RV's secret system with mission-based rewards. She agrees and begins by upgrading the RV into a heavily armored, three-story fortress equipped with weapon turrets, bulletproof windows, and tank-grade tires coated in Freya’s anti-corrosion paint. Despite a jealous villager’s taunts, her crew accelerates work, and as the upgrade completes, she acquires an advanced water filtration system. Her first reward is about to arrive, setting the stage for her next move.