When a pandemic struck, young kids were the only people to survive. Before the pandemic, machines had existed to continuously monitor and care for humans. Now, as they have taken over the world, they just need one thing: children. They must constantly have their own population to keep up with their production of goods and services, or they'll die off. So they continuously monitor any human preteens and prepare them for testing once they turn 12. This test determines if they live a normal life or are sent away to factories where they will be recycled into spare parts for machines. Some of them mixed cyborg kids though still have human conciousness and they are fighting against the machines to freed the human race. They are the Future Fighters.