A devastating storm swells the Tennessee River to dam-breaking levels on the eve of Eden’s planned move into a new riverside apartment complex. With the gushing waters comes a tide of corpses sunk in the river for more than a century, now animated and organized by a malignant force with an inscrutable purpose. When psychic investigator Eden realizes that the zombie army is converging on historic Read House, she draws a connection to the ghost of Caroline Read, who haunts the building trying to resolve a hushed-up 19th-century atrocity.