After Sandy Parker finally walked away from her unhappy abusive marriage, her parents refused to help her, so she spent more than a year living off the charity of friends before she managed to find a job on a local ranch in Wyoming called “
Rolling Thunder”. As Sandy begins to build a new life and find a peaceful existence, an unknown person begins to harass her in increasingly bizarre and cruel ways. Is it her mother or her ex-husband? Or is it someone else who would benefit by Sandy going away or even ceasing to exist?