After Lin Yu, an internet technology manager, dies from overwork, she transmigrates into a wasteland and becomes a 19-year-old scavenger. With the Civilization Reconstruction Assistance Terminal, she begins fighting for survival by purifying water and hunting mutated insects. Along the way, she rescues Old Jack, Alice, and the death warrior Ghost, eventually taking control of Shelter No. 73. After repairing the nuclear reactor, the four of them grow potatoes, cultivate mushrooms, make canned food, and brew alcohol, transforming their underground base into a self-sufficient fortress. Facing Deathclaws and the Black Prison convoy, Lin Yu defends against their enemies with chemical traps and electromagnetic weapons, wiping out the Black Prison's elite forces through a clever strategy of turning enemies against each other. In the wasteland, she leads her companions in farming, defending their home, and surviving as they gradually rebuild civilization.