As evolved AIs seek to obliterate humanity, the aftermath is rife with the stench of burnt flesh and fresh blood. In a last-ditch effort to prevent catastrophe, a scientist gambles everything on an artifact from the past. Taking us back a century, AIs have long been integrated into society, with specific tasks programmed into them for their entire existence. Vivy, the first autonomous AI and a songstress tasked with bringing joy, performs tirelessly in a deserted theme park. However, her routine is shattered when a future AI enlists her help in preventing a century-old war of cataclysmic proportions. Despite the shocking truth, Vivy embarks on a century-long mission to alter the course of history and save the world from destruction.