Alright, people, this set-up just ain't working. We need to restructure out society. And I have the perfect plan to do so! Step one, obliterate all semblance of classes. Step two, establish two new classes. Me, and peasants. Step three, give all wealth in the world to me. And just like that, we've fixed society. (For legal reasons, this is a joke)
Earth had fallen to robots. The human race was exterminated but the androids fighting to reclaim earth have been told that humans still live. One of main characters(2B) dies, another main character's(9S) mental state deteriorates because of that death and his hellbent on killing all robots and then avenging 2B.