Alaska in the year 2314: The secret, subterranean world of Tanhaia is threatened by the arrival of Outsider scientist Jack Correll, and his small cadre of scientists from the surface. While the tribe deals with the threat of the intruders, seventeen-year-old Nahanni Redfern searches through the stories of her tribe's former life on surface and war with the Outsider armies thirty-seven years ago to figure out the identity of the traitor who is behind the attempts to assassinate her uncle, and who may have been responsible for her the death of her own father -- before he kills again.