The deadly extreme cold storm swept across the world, and civilization collapsed in just a few days. Lin Mo huddled in an apartment in the ruins of a northern city that was about to be buried in ice and snow, lingering. Low temperature, hunger, and a human heart that was more terrifying than the severe cold were rapidly depriving the survivors of their health. Life and hope, on the verge of death, a strange warm current awakened in his body. It was not a simple warmth, but a tiny space connected to an unknown dimension, and a vague instinct about construction and strengthening. A search after a snowstorm made him discover He discovered an abandoned air-raid shelter from the old era in the mountains on the edge of the city. The entrance was half-covered, as deep as the mouth of a giant beast. He looked at the half brick that glowed slightly due to supernatural powers in his hand, and then looked at the dark cave. A crazy idea took root in his heart. He wanted to use this simple Using the cave as the basis, in this ruthless cold wave, he builds a final shelter that can withstand severe cold, famine and all threats. Starting from the first wind-blocking wall, starting from collecting the first ray of precious energy, every step of his infrastructure construction is on the edge of survival.