The global outbreak of mutated acid rain caused by pollution led to barren lands, with no plants growing and food becoming scarce. Coming from a farming family, Ling Xiao was able to survive because there was still some stock in the family's grain warehouse. As food became increasingly scarce, the ugliness of people fighting for it made Ling Xiao feel as though he were in hell. Ling Xiao developed an innovative technology enterprise that not only purified water sources but also invented compressed biscuits, helping people return to normal life. His actions served as a wake-up call to the public, reminding them to protect the environment and solve problems through scientific methods. No matter how difficult the situation, there's always a silver lining after the storm.