In the future city "New Feileng Cui" in 2377, social classes have solidified. The upper-class elites live in the floating "Sky City", while the people at the bottom are struggling to survive in the heavily polluted "Underground City". Gu Chuanze, a "scavenger" who makes a living by picking up discarded technological products, is at the bottom of society. One day, when he was adventurously scavenging in the "grey zone" of the restricted area, he accidentally discovered a strange metal nanolarva. The larva merged with him involuntarily, giving him the uncanny ability to extract, analyze and fuse the genetic characteristics of any creature he came into contact with. From the agile reflexes of cyber-modified rats to the photosynthetic skin of genetically engineered plants, Gu Chuanze began to grow exponentially in power without anyone knowing. He has grown from a little person who was bullied by others to a terrifying existence that can shake up giant companies and challenge the definition of "humanity". What he has to do is to firmly hold his secrets and power in his hands before he is discovered by the ruthless forces that control the entire world.