小说作家阿贞与拳王父亲从小存在隔阂，父亲离世后，她通过格斗竞技探寻真相，逐渐理解父亲并完成自我蜕变。影片围绕父爱与亲情展开，男主角虽格斗天资一般，仍不懈追寻梦想。剧情融合文与武转换、善与恶抉择，最终阿贞为父正名，成为真正的格斗家 。
The Saphead is a 1920 comedy film featuring Buster Keaton. It was the actor's first starring role in a full-length feature and the film that launched his career. The plot was a merging of two stories, Bronson Howard's play The Henrietta and the novel The New Henrietta by Victor Mapes and Winchell Smith, which was meant to be an adaption of Howard's play.
