Gina and Derek Parker, married military veterans and parents of Boyd (10), reside in a secluded mountain home, from which the couple is preparing to move in anticipation of the imminent arrival of their second child. One evening, after an open house, Gina finds herself in a desperate battle to protect her ex-prison warden husband and their emotionally-impaired son when two vengeful home invaders from her husband’s shadowy past pay an unwelcome visit.