Austrian actress Mady Christians stars alongside German matinee idol Willy Fritsch in this adaptation of the Oscar Straus operetta about a Prince who, after falling for a Viennese girl, becomes obsessed with the city and its customs.
Comedy superstar Kamma has her professional life and her relationship strained when her son Maurice becomes fatally ill. Only a small fragment of the film remains.
Attorney General Trevor's second wife is found stabbed to death in his safe. Due to a ring with the initials DG, which is also found in the safe, the suspicion initially falls on Donald Gordon, the fiancé of Trevor's daughter.