Richard Hanney has a rude awakening when a glamorous female spy falls into his bed - with a knife in her back. Having a bit of trouble explaining it all to Scotland Yard, he heads for the hills of Scotland to try to clear his name by locating the spy ring known as The 39 Steps.

一位老人（尚冠武 饰）拥有一儿（张翼 饰）一女（陈燕燕 饰），儿子已经结婚，整日和儿媳（黎灼灼 饰）一同周旋在达官显贵之间左右逢源，这令老人感到非常的心痛，因为他希望自己的儿子能够成为一个正直的男人。儿子为老人举办了奢华的庆生宴，这场宴会让老人幡然醒悟，携家带口搬往乡下，设立了慈善机构。很快，儿子就因为受不了乡下不便的生活而离开了父亲，女儿也陷入了一段不伦的感情之中。
一晃眼多年过去，老人已经有了孙儿（郑君里 饰），孙子一直看不惯父母和祖父之间疏远的关系，于是带着妻子回到了老人的身边，与此同时，老人的女儿也浪子回头。

1935 Nazi propaganda film by Leni Riefenstahl about the 1934 Nazi Party Congress in Nuremberg