City ruins. On the top of the wreckage of the building, Zhou Yan in a navy blue police uniform stood quietly. Under the building, a group of human beings with pus-filled skin laughed strangely and rushed towards a naked woman, who shouted for help Zhou Yan's eyes revealed a cold metallic luster, nanobots were running in his veins, and his skin gradually turned into a silvery white metallic luster. When the weird human was about to prey on the woman, he suddenly jumped from the top of the building Boom! The street was cracked, Zhou Yan stood up, and walked towards the weird human who was disturbed by him. Who are you, get out! Don't meddle in your own business! The weird human roared loudly with its pus-tick mouth. At Zhou Yan's feet Non-stop, with a cold tone: No matter who I am, no matter how the world collapses, I always remember my duty - I am a people's policeman!... This is a post-apocalyptic story of Steel Armored Police.