There is still one month before the "grey fog" apocalypse breaks out. After the outbreak of the apocalypse, the world is shrouded in a deadly gray fog. Most humans will be infected and mutated into "ash eaters", and only a few determined people can awaken their supernatural powers. Animals and plants mutate under the influence of the fog, the world order collapses, and the laws are reshaped. The protagonist Lin Mo returns from rebirth and awakens the "infinite god-level space" bound to his soul. In his previous life, Lin Mo struggled in the apocalypse for ten years, turning from a kind-hearted young man into a cold-blooded murderer. He was eventually betrayed by his brother Zhao Qiang and died tragically to protect his sister Lin Wei. After rebirth, he has a decisive and decisive character, with an above-average IQ. His only weakness is his younger sister. Core driving force: Protect your sister, take revenge on your enemies, and build the strongest security fortress in the apocalypse.