A flash flood in the Arizona desert brings Nastas, a lone Navajo brave, into the national spotlight. His heroic efforts to save a young girl trapped in the melee leave him wounded, and Spirits lead him to an oasis cultivated by Keane, a white-man-turned-shaman whose place in the Navajo tribe is becoming increasingly important. Meanwhile, Keane's brother, Archer, encounters a series of mysterious figures and events in Ireland, where he is spending a semester at Trinity College. Both...