An Englishman travelling through a European country meets the aristocrat soon to be crowned king, who is his exact double. When the prince is drugged before his coronation, the visitor is persuaded to take his place to avoid a political crisis. However, when the true ruler is kidnapped, he is forced to keep up the deception. Adventure, starring Stewart Granger, James Mason and Deborah Kerr.

A kingdom's ascending heir, marked for assassination, switches identities with a lookalike, who takes his place at the coronation. When the real king is kidnapped, his followers try to find him, while the stand-in falls in love with the king's intended bride, the beautiful Princess Flavia.