Dick Thorpe (Nelson Eddy) is a football star for the Army, and Rosalie (Eleanor Powell), a Vassar College student who is also a princess (Princess Rosalie of Romanza) in disguise, watches a football game. They are attracted to each other and agree to meet in her country in Europe. When Dick flies into her country, he is greeted as a hero by the king (Frank Morgan) and finds Rosalie is engaged to marry Prince Paul (Tom Rutherford), who actually is in love with Brenda (Ilona Massey). Dick, not knowing of Prince Paul's affections, leaves the country. The king and his family are forced to leave their troubled country, and Dick and Rosalie are finally reunited at West Point.