Carlos Nava is at a crossroads. His life is one long series of career moves meant to further him up the ladder at the International Agency for Space Exploration. But then a new threat looms from the B'Noth, an elusive culture that attacks Earth's ships out of system. An IASE ship goes missing, last seen near Pluto. The fleet blames the B'Noth, thinking they've made an incursion into Sol, but soon questions arise surrounding the ship's disappearance. Nava commandeers a cargo vessel to investigate, heading out to Pluto and away from his comfortable life. However, as evidence mounts, he begins to wonder if it is really the B'Noth, or something far more ominous.