When his bride-to-be finds him much too stiff, Prince Karl, heir to the throne, is sent to the university in Heidelberg to learn how to socialize. There, he befriends the students and falls for Kathie, a down-to-earth barmaid. As soulmates, the two share a deep connection, but when Karl's grandfather, the king, falls ill, Karl must choose between his duty to his country and his own happiness. Cast: - Ann Blyth - Edmund Purdom - Mario Lanza - John Ericson - Louis Calhern - Edmund Gwenn - S.Z. Sakall - Betta St. John - John Williams - Evelyn Varden - John Hoyt Runtime: 107 minutes