Fan Mu, codenamed "King of Hell", was once the king of soldiers who terrified his enemies. During a mission, he accidentally obtained the [Doomsday Ark] system, which gave him the unparalleled ability to infinitely evolve skills in disasters. Just as he was preparing to retire to the city and enjoy a peaceful life, a natural disaster that could destroy the world quietly came - earthquakes, tsunamis, extreme cold, biological mutations... The world fell into a doomsday panic. What's even more troublesome is that his five-year-old daughter Xiao Nuomi suddenly appears in front of him, her pure eyes full of dependence on her father. The former iron-blooded soldier king was forced to become a full-time nanny, taking his daughter to survive in the apocalyptic ruins. Not only does he have to face the escalating threat of natural disasters, he also has to deal with survivor forces with their own ulterior motives. When everyone thought the doomsday was an abyss of despair, Fan Mu used his infinitely evolved skills to step by step uncover the shocking secrets behind the natural disaster - this was not a natural disaster at all, but a sophisticated hunt for humans.