What is the Japanese drama fallen angels about?

... at the beginning of the story, Hai's mother asked Hai to find his two brothers, Yi and Lu. . A group of self-righteous lunatics with high IQ want to break all the concepts of this country (Japan, of course) and rebuild a new country. .

They believe that today's Japan has no vast land and rich resources, and even the economy is facing collapse, so it is necessary to change this country. It integrates the excellent abilities of human beings, that is, the so-called genius. However, after all, there are not many geniuses. It is necessary to create more outstanding talents, that is, to transfer memories from donors to recipients through organ transplantation, so as to breed more outstanding talents. The sea is their experimental sample. . He was chosen because of his super memory, and his heart was transplanted to Hai. Hai's mother couldn't bear to let her children become victims of the experiment, so she let Hai leave to find his two brothers. . At the same time, yuuki's brother picked up his younger brother as agreed in the hour, but when he was a child, the welfare home disappeared, and so did his younger brother. He met his mother's wings, land and sea in the same disappearing hospital. . . .