加里·库珀似乎被误认为是一名原子科学家（阿尔瓦·杰斯珀教授），他被OSS派到欧洲去营救其他被迫与纳粹原子弹项目合作的科学家。在任务期间，他卷入了意大利的斗争，爱上了勇敢的吉娜（莉莉·帕默）。

　　Carrie and Justin Palmer are the perfect couple to everyone around them. Or so it seems. They recently celebrated ten years of marriage and are talking about starting a family. After a wine filled evening, Carrie's girlfriends press her to share who her "hall pass" would be. Carrie admits that she has had a crush on famed rocker, Dante Jones, since she was in college but would never betray Justin if given the opportunity. After a business trip to Vegas and a chance meeting with Dante himself after his concert, her obsession suddenly becomes his. Carrie does everything in her power to keep her secret away from her friends and more importantly, Justin, but Dante's stalking and relentless infatuation becomes all-consuming and far too dangerous to hide.

故事发生在1937年西班牙内战时期，在纷飞的战火之中，一位来自美国的名叫罗伯特（加里·库柏 Gary Cooper 饰）的男人，他的身影时常活跃在前线，带领着西班牙人民抗击当地法西斯的残暴统治。他们炸火车打巷战，打得敌人节节败退。