Post-apocalyptic base administrator Lu Qingran time-travels into a house-fighting world, becoming an abused concubine-born daughter of the Lu family. Facing severe trials such as her stepmother withholding monthly allowances, her older half-sister maliciously harming her, and her father heartlessly trying to sell her, she manages the household with military governance strategies, unearths her stepmother's embezzlement ledgers, counterattacks her sisters' schemes, and exposes her father's misdeeds to reclaim stewardship of the estate. Afterwards, when enemies come to slaughter the family, relying on her post-apocalyptic defense planning experience, she coordinates the entire estate, ingeniously sets traps to rout a group of assassins, and protects the Lu family. Lu Qingran establishes new rules for the estate, resolves internal conflicts, leads the Lu family toward stability, and finds her own belonging there.