Today, Venus is a literal hell of furnace-like temperatures and a dense, poisonous atmosphere. But millions of years ago, the planet teemed with life and a civilization far more advanced than our own. The Nemesis supercomputer controlled government functions, with bioroid "executors" created to carry out the system's utopian edicts. But trouble brewed even in paradise, as different executors vied for control of Nemesis, forcing the governing system to secretly create Duna Typhon, a super-bioroid "sleeper," raised among the human populace, ready to use her awesome powers should Nemesis be co-opted to turn paradise into paradise lost.