It is the year 2059. Major world cities are under the control of a security force called Scion. Paige Mahoney works in the criminal underworld of Scion London, part of a secret cell: the Seven Seals. The work she does is unusual: scouting for information by breaking into others' minds. Paige is a dreamwalker, a rare kind of clairvoyant, and in this world, the voyants commit treason simply by breathing. When Paige is captured and arrested, she encounters a power more sinister even than Scion.