Leslie Parkhurst, a teenage girl in the care of her 22 year-old brother, Declan, is involved in an incident with an escaped mental patient with supernatural abilities at an upstate New York facility. Leslie tries to forget her deadly encounter with the terrifying escapee, an elderly woman named Mament. On her 18th birthday, Leslie and her brother embark upon a perilous journey to visit their estranged father serving at a top secret, US Air Force base. Leslie and Declan soon discover that Mament was part of the US Office of Strategic Services (OSS), which now has become a secret, religious sect within the Central Intelligence Agency (CIA) known to conspiracy theorists as "The 7-8-9s.".