A human detective lost his memory and body in a car accident, his brain was transformed into a Cyber. The detective received an encyclopedia of cloud phenomenon, the book recorded the special cloud phenomenon in history. Humans who had seen the special cloud phenomenon, disappeared, Cyber and robot witnesses lost their memories about the phenomenon when they came back.  With the investigation, the detective found that he didn't exist in the real world, all the records that could prove he had existed in the real world disappeared. Once again in a car accident, Cyber detective Robert saw, the driver in the car he crashed into, it was human detective Robert. And the cloud phenomenon in the car accident was the Arcus cloud, which was the cover photo of the encyclopedia. The detective discovered the cause of the accident. THE TRUTH OF THE WORLD The truth of the world: The Cold War and an arms race began between AI civilization and human civilization. The time machine and prediction algorithm appeared. AI and humans came back and constantly modified history with the time machine, finally causing the world time chaos. All the species suffered from a temporal memory disorder. According to legend, there was a temple collected the true history of the civilized world before time chaos, ... Updating Sporadically.