Civilized Sanatorium

Radio scientist Chen Yu captures a mysterious signal containing ancient prayers, and is involved in the global observation network established by the "Builder" civilization. He joins hands with Su Wanqing, who has the bloodline of the "Key Keeper", and goes deep into mythical places such as the Bronze Secret Realm of Beimang Mountain and the Underground Palace of the First Emperor on Lishan Mountain, gradually revealing the cruel truth about the earth as a "Garden of Civilization", and fighting for the survival of mankind under the multiple threats of the "Gardener of Agreement", "Betrayer" and "Source of Chaos".