The extreme heat apocalypse countdown begins, and supermarket cashier Cui Yue is reborn with memories of her past life. Seeing through the true faces of her husband Jiang Hao and adopted sister Cui Xue, she resolutely divorces to escape, securing an old courtyard with a basement. Purchasing massive supplies, installing solar power, raising the walls, and fortifying the courtyard into a sanctuary. The apocalypse arrives one after another, with extreme heat, earthquakes, and fires taking turns. Former enemies come to besiege with various motives, but Cui Yue chooses to close her doors for self-preservation, without taking the initiative to harm anyone, letting the greedy people head towards their doom amidst infighting and water shortage. After ninety-five grueling days, heavy rain washes the earth, and Cui Yue, holding the keys in her hand, rushes toward her own rebirth.