After WWII, "Jack Grandi" falls in love with a young girl only to find that there is an historical enmity between his family and her's. Can their love survive the accusations of treason and betrayal?

An Italian adaptation of the Richard Wagner opera Lohengrin, where a woman prays for a saviour, and receives it in the form of the title character, a man who will marry her and stay by her if she never asks him his name.