We are taken to the mysterious planet Equatoria, a world apparently engineered for humanity by the inscrutable machine intelligences known as the Hypotheticals. Turk Findley, a man with a criminal past, runs an aeronautical charter service on the newly settled planet. Lise Adams, who hires Turk, is a would-be journalist searching for her vanished father, a scientist obsessed with the Hypotheticals and their illegal life extension technology. Meanwhile, young Isaac, genetically manipulated by rogue scientists so that he may become a conduit between humanity and the AIs, is coming of age, and something enormous and unknown is assembling itself far underground.