该电影由克林特·伊斯特伍德执导，克林特·伊斯特伍德、桑德拉·洛克、杰佛里·刘易斯等主演，于1980年上映。在118分钟的叙事中，《不屈不挠》（又名：铁汉娇娃、硬汉比利）Bronco Billy McCoy is the proud owner of a small traveling Wild West show. But the business isn’t doing too well: for the past six months he hasn’t paid his employees. At a gas station he picks up Antoinette, a stuck-up blonde from a rich family, who was left behind without a penny by her husband on their wedding night. Billy likes her looks and hires her as his assistant. She seems to bring them bad luck and the business gets even worse. In these hard times she loses her reluctance and starts to like her new way of life... and Bronco Billy. Written by Tom Zoerner