In his last film assignment, portly Walter Connolly fills the title role (in more ways than one) in The Great Victor Herbert. Very little of Herbert's life story is incorporated in the screenplay (a closing title actually apologizes for the film's paucity of cold hard facts); instead, the writers allow the famed composer's works to speak for themselves. In the tradition of one of his own operettas, Herbert spends most of his time patching up the shaky marriage between tenor John Ramsey (Allan Jones) and Louise Hall (Mary Martin). Many of Herbert's most famous compositions are well in evidence, including "Ah! Sweet Mystery of Life", "March of the Toys" and "Kiss Me Again", the latter performed con brio by teenaged coloratura Susanna Foster. Evidently, the producers were able to secure the film rights for the Herbert songs, but not for the stage productions in which they appeared, which may explain such bizarre interpolations as having a song from Naughty Marietta.

Pop, a security guard at Paramount has told his son that he's the head of the studio. When his son arrives in Hollywood on shore leave with his buddies, Pop enlists the aid of the studio's dizzy switchboard operator in pulling off the charade. Things get more complicated when Pop agrees to put together a show for the Navy starring Paramount's top contract players.

Victor Ballard, a happy-go-lucky albeit impoverished sidewalk photographer, shares a New York City studio apartment with Polish immigrant painter Stefan Janowski. The big city doles out joy and misery indiscriminately: In the apartment below Victor and Steve, Gus Nelson learns that his wife has given birth to quintuplets, while the lonely tenant in the apartment below Gus has given up on life and committed suicide.