An ultra-low-temperature cold wave from deep space sweeps across the globe, freezing modern civilization overnight. In his past life, Jiang Chen was betrayed by his lover and died a tragic death. At the moment of near death, he accidentally activated a mysterious alien fragment he carried with him, and his consciousness drifted back to thirty days before the disaster struck. Living a life anew, he exhausts his family fortune to build a military-grade doomsday fortress, hoarding massive amounts of survival supplies and strategic equipment. Faced with his past enemies and all kinds of desperate forces, he crushes them step by step with an iron defense and absolute strength, reshaping the order of survival on the frozen wasteland, and step by step uncovering the truth of the high-dimensional civilization behind the extreme cold.