After centuries of war between humans and the MME machines, the humans have won the battle. However, many lives were lost and the Earth was rendered terribly damaged and unstable to live on. Shortly afterwards, mankind began to restore Earth, and a new race of cyborgs called "Yumans" had begun to live with the humans. In desire for a better future, humanity is now linked in one large computer network. However, a conflict between the Humans and Yumans shortly began. Considering themselves far better than the human, the Yumans began to plot a takeover. Now humanity lives separated into tightly packed arcologies built around the world, each keeping minimal contact with the other and dealing with internal problems like overpopulation.