Josey Aimes (Charlize Theron) is a female worker at a Minnesota mining company. The iron mine where Josey works is in transition from a male-only environment to one where the number of women workers continues to grow. Josey is aware of the problems at the mine, but takes a job at the mine because it pays well, and she has to support her two children. She can handle the work, but is targeted, along with the other women, with sexual harassment and bullying. She tries to complain to management, and through her union representative, but things continue to get worse. Finally she quits and files a sexual harassment lawsuit against her employer for failing to protect not only her, but also the other female employees. Based on a true story and the Jenson v. Eveleth Taconite Co. case.