Zwei Herzen in Ein Schlag (Two Hearts in One Beat) is a tailor-made vehicle for popular musical star Lillian Harvey. Usually cast opposite Willy Fritsch, Harvey is here co-starred with a new screen partner, newcomer Wolfgang Albach-Retty. The story concerns Jenny (Harvey), a cabaret performer who aspires to an operatic career, and her husband, waiter Victor (Albach-Retty). Achieving success on stage, Jenny decides to divorce Victor and marry a nobleman, but her husband refuses to consider such a thing. Jenny then sets about to goad Victor into treating her with cruelty, thereby giving her grounds for divorce. By the time he responds to her efforts, however, she's fallen in love with him all over again. Star Lillian Harvey and director William Thiele also collaborated on the French-language version, La Fille et le Garcon.