Eden Moore can see dead people, or rather, she can see ghosts. However, when reports emerge of silent spectres in ragged uniforms appearing on the fields at of Chickamauga, Georgia—America's oldest military park— terrifying tourists and park rangers alike, Eden is not interested, preferring to let a team of celebrity ghost hunters answer the spirits' plea. Why do the ghostly soldiers march again? The apparitions need an intermediary, someone who can speak to them, and for them. Eventually reluctant medium, Eden, is drawn to the heart of the unearthly mystery.