The sudden extreme cold doomsday descends upon the world. Seafood shop owner Jiang Qingyue accidentally discovers her neighbor Wang Dawei frantically hoarding goods, suspecting that he is a reborn person. She sells her real estate, borrows money to raise funds, follows the other party's clues to frantically reserve supplies, and hides in the cave refuge left by her father to survive. When the doomsday arrives, the brain system goes online, strange beasts run amok, and dangers continue. Jiang Qingyue harvests lucky treasures, subdues the strange beast spirit rabbit Jiang Qingyan, saves the heavily injured powerhouse Long Jiuxing, and collects powerful special weapons. She maneuvers between various base forces, fights against the ambitious reborn Wang Dawei, and in the icy and snowy doomsday, strives to guard her own small nest.