Tommy Dagget wanted to be a priest, but lost his faith and became a cop instead. He once wrote a learned treatise on angels, so when a physiologically abnormal individual is found murdered and a copy of Dagget's study discovered on the crime scene, he's assigned to investigate. What he uncovers is a literal war of angels. These supernatural creatures, led by the vicious Gabriel, are a tormented, murderous lot, warped by God's rejection in favor of "talking monkeys" called the human race. The angel Simon travels to a dying Western town and steals the soul of a recently deceased psychopath. Gabriel wants it back, because such souls increase his power. Simon hides it in the body of a small girl, and the race is on. Who will get to the little Mary first, the sinister angels, or the forces of human good?