This is a tale told by the ancient robot, Broome, about a group of humans caught up in an alien attack that threatens to destroy everything. Tam and Prad Pokkar, traders from the Republic of Karmarg are catapulted to the heart of the action when an incomprehensible alien weapon destroys their friends and relatives. They set off to face the invader, knowing nothing of who it is or why they have attacked. Only one person has an inkling of what is going on. Berenetta, a young, terrified Earth-woman with a brilliant gift for mathematics, begins to grasp the science behind the alien technology. When Tam and Prad find her, Broome, their Chief Engineer, remembers something from its almost-forgotten past, a legend of enhanced humans with similar technology. The transhumans of Omega Point. So they set off to find these lost superhumans, believing they might be humanity's last hope. But the shock waves of the attack are spreading across Human Space and the fragile peace between scores of anxious polities is collapsing. Omega Point is not what they expected and nor are the invaders. As war erupts all around them, Tam and his crew struggle to stop the invasion and end the conflagration.