Gabriel and Michael Corrigan are two young men living just beneath the glittering surface of life in Los Angeles. Since childhood, the brothers have been shaped by stories that their father was a Traveler -- one of an elite group of prophets able to attain pure enlightenment. The Corrigans, who may have inherited their father's gifts, have always lived "off the grid" -- that is, invisible to the intricate surveillance networks that monitor people in our modern world.