Sixty-year-old senior Zhang Xiuying, poisoned by the old concept of "raising sons to provide against old age" in her past life, gave all her family property to her nephew Zhang Qiang, single-mindedly expecting her nephew to support her in her old age. After the apocalypse of extreme cold broke out, she was ruthlessly abandoned by her nephew instead, dying a tragic death amidst hunger and cold. Carrying regret, Zhang Xiuying is reborn back to two months before the extreme cold descends. Awoken to the truth, Zhang Xiuying completely casts aside her stale obsessions, determined to make amends for her biological daughter Lin Wan, whom she had always owed. She decisively sells all her urban properties, withdraws all her savings, and persuades her daughter to move together into a secluded deep-mountain ancestral home. The mother and daughter untie their years-long emotional knots, joining forces to transform the ancestral home into a secure fortress capable of withstanding minus forty degrees of cold wave, while crazily hoarding supplies.