In Italy in 1939, a European man calling himself Mr. Imperium uses a ruse to meet an attractive American woman, Frederica Brown. He eventually is revealed to be Prince Alexis, an heir to the throne and a widower with a six-year-old son. He nicknames her "Fredda", so she calls him "Al". When his father becomes gravely ill, he must rush to be with him, but asks prime minister Ber......