影片叙述一个妓女和她的情人寻求拯救他们灵魂的道路，使他们从污泥中的儿女变成太阳下的儿女。当剧中的男主角鼓起勇气在象征邪恶的坏蛋脸上打了一个耳光以后，他们两人终于获得了他们所追求的目的。
Childhood friends Tommy and Tuppence meet in London after having served in World War I. Recently "demobed", short of money, and with no job prospects, they decide to become adventurers for hire. Soon, they are employed by the British Government to locate a secret treaty signed before the war.
