Porter, um rico e sofisticado herdeiro, decide servir na Primeira Guerra Mundial como enfermeiro de ambulâncias. Lá ele encontra Linda Lee, que irá tornar-se sua esposa, servindo como enfermeira. Depois da guerra, sua atividade na Broadway permite mostrar uma sequência de belas canções, como Just One of Those Things, You're the Top e a música título.

"On Broadway" featured Carol Channing and Pearl Bailey, both red hot after their respective runs in the smash hit "Hello, Dolly!" on Broadway. The special was filmed on the stage of the Wintergarden Theater in New York and originally aired on ABC in 1969. Together the theatrical legends playfully perform some of their most popular hits, including 'A Little Girl from Little Rock,' 'Little Green Apples,' 'If My Friends Could See Me Now,' and 'Won't You Come Home, Bill Bailey.' Next, they perform an assortment of familiar showtunes including hits from "Guys and Dolls," "The Music Man," "Hello, Dolly!," and "Fiddler on the Roof." "On Broadway" is an entertaining step back in time.