Delphi and Detinna try to retire from the struggle of their times, but become entangled in a movement that resists the empire. After a series of mathematically calculated escapes, they find themselves at the center of the resistance. Using psychic means they enter the halls of power to topple the empire, but encounter forces much darker and powerful than they had imagined. The result is unexpected and the protagonists find themselves in a place they least expected.
