Shortly after 17-year-old Maren Hamilton is orphaned and sent to live with grandparents she's never met in Scotland, she receives an encrypted journal from her dead mother that makes her and everyone around her a target. It confirms that her parents were employed by a secret, international organization that's now intent on recruiting her. As Maren works to unravel the clues left behind by her mother, a murderous madness sweeps through the local population, terrorizing her small town. Maren must decide if she'll continue her parents' fight or stay behind to save her friends.