25-year-old 's Joanna Miles ( Sarah Michelle Gellar ) is a transportation company 's sales agents, although a successful career , but private life was a mess - not only with her father (Sam Shepard ) estranged ex-boyfriend just broke up personality paranoid is tracking her hold , but also because the character of tough aggressive, and Joanna do not even have a few close friends . I do not know since when , Joanna began every night was a nightmare woke up in a dream , she witnessed a brutal murder , but killed the woman she had never seen . Night after night, she began to feel the murderer is a cruel serial killer , the frightening unparalleled image and even in everyday life to her wound and hold and she began to hallucinate , migraine headaches , constantly see or even feel different like . Always think of your life is out of control Joanna decided to fight back , found killed in her hometown , so follow the guidelines of a nightmare - the state of Texas , a small town . To town , Joanna think there has to tell Road, unknown links . Was buried secrets about to be opened, the town 15 years ago, a bloody murder seems inextricably linked with her , while Joanna is probably the murderer's next target ...