Harry Feversham is in love with the alluring Ethne Eustace. A dazzling engagement ball is held in their honour at her Irish country home. For Harry, it seems like life cannot get any better. But a mysterious package arrives for him and the contents turn out to be three white feathers. Publicly branded a coward, Harry suffers the ultimate humiliation when Ethne adds a fourth feather to his collection. Shunned from society, he sets out to regain his friends, fiancée and honour. Embarking on a deadly mission, which takes him from Ireland to England to Egypt, that tests his courage to the limits and his will to survive.