Senior Chief Griffith doesn't believe in God, heaven, or the institution of marriage. How could he? He had died once before and saw no evidence of a supreme power. In a distant future the Senior Chief would find himself reanimated by an advanced Artificial Intelligence to assemble and train an elite group of Rangers in order to bring a swift end to a devestating interstellar war. Griffith will soon learn that the path to saving the galaxy and the pilgrimage to find his soul and restore his faith in humanity are one and the same.