A global catastrophe codenamed "Red Mist" came without warning. The scarlet mist swallowed up 70% of the land. The survivors not only had to face a harsh environment with thin oxygen and mutated vegetation, but also had to avoid the "abnormals" transformed by the red mist - monsters that retained human outlines but possessed sharp claws and bloodthirsty instincts. Lin Feng, a former member of the special forces, rescued psychiatrist Su Qing in the ruins, and the two people with completely different personalities and skills were forced to team up. While searching for supplies and building shelters in the concrete jungle, they tried to uncover the truth behind the red fog: is it a natural backlash or a man-made disaster? As more and more survivors gather, competition for resources, distortion of human nature, and siege by aberrants ensue. Lin Feng's coldness and Su Qing's flexibility become each other's armor. In this land cut off from hope, they must not only fight against external threats, but also resist inner despair, just to find a glimmer of hope for humanity before the red mist dissipates.