The extreme cold apocalypse arrives abruptly. Jiang Qingyue, a seafood store youth, insightfully foresees the crisis in advance, sells off assets, puts down roots in a suburban underground shelter, carefully reserves all kinds of survival supplies, and prepares for cold resistance and disaster avoidance. When the apocalyptic cold wave descends, the optical brain survival system goes online synchronously, and the frozen world is full of crises. On the survival road, Jiang Qingyue gets acquainted with the powerful strange beast partner Jiang Qingyan, saves the genius powerhouse Long Jiuxing, and the two travel together, helping each other. They discover the magical treasure Plant Doctor, reinforce the shelter, build power generation facilities, open up greenhouse vegetable gardens, and achieve self-sufficiency in food through self-reliance. After enduring heavy survival tests, they complete special tasks with unremitting efforts.