When the aliens attacked, humanity was nearly wiped out. There weren't enough fighting men or women left alive to defend Earth. Desperate to survive, the Piecer Corp plan was initiated; thousands upon thousands of DNA manipulated recruits were created to defend Earth. But they needed them now, so they created the "Sixers," grown adult soldiers in as little as six years. It worked. They beat them back. A truce was called and Earth rebuilt. After...