此为表现苏联侦察员建立功勋的影片。卫国战争期间，苏军侦察少校费道托夫奉命于夜间跳伞到敌占区，去刺探德国大本营的军事行动计划。他的侦察对象是掌握德国最高军事秘密的司令官孔恩中将。费道托夫在敌占区化名为亨利·艾凯特，变成一个举止阔绰、颇有气派的巨商。费道托夫想方设法与间谍头目卢迈堡发生联系，打入他们的内部。经过一连串机智勇敢的斗争，终于了解谁是潜伏在苏联某部门向敌人提供情报的叛徒，给他以应得的惩治。最后，费道托夫抓到了孔恩。　　勇敢、机智、沉着的苏联侦察员，就这样立下了伟大的功勋。

　　Sir Robert Chiltern is a successful Government minister, well-off and with a loving wife. All this is threatened when Mrs Cheveley appears in London with damning evidence of a past misdeed. Sir Robert turns for help to his friend Lord Goring, an apparently idle philanderer and the despair of his father. Goring knows the lady of old, and, for him, takes the whole thing pretty seriously.