The bitter winter catastrophe descended without warning, the piercing cold freezing the earth, and civilization's order rapidly collapsed. In his previous life, the male protagonist Lin Chen held kindness in his heart, easily trusted those around him, and ultimately met a tragic end. Reborn overnight back to before the disaster struck, he learned from past lessons and no longer pinned his hopes on others. He hoarded supplies in advance, planned a safe residence, calmly judged all kinds of crises, focused on guarding himself, and steadily searched for a way to survive for himself in the cruel doomsday.