Warner Baxter plays a Broadway producer with one last opportunity to put on a hit show, but his chances are compromised by his tempestuous star (Daniels), who is having an affair with the show’s major funder. After an unfortunate turn of events, he is forced to call upon “a real little trouper” (Keeler) to save the show. 42nd Street inaugurated Busby Berkeley’s sensationally successful career with Warner Brothers; his staging of “Shuffle off to Buffalo” inside a Pullman railway carriage and “42nd Street,” which features a dancing Manhattan skyline, established him as a major figure in Hollywood musicals.