A fictionalized biography of Broadway singer-dancer Marilyn Miller, it stars June Haver and Ray Bolger.

While she rests in her dressing room, a man from her hometown comes to show her a poster of the Miller family, beginning a flashback to how she joined her parents vaudeville act, even though she is underage.

It is Jack Donahue who first spots Marilyn's talents, picking her "at random" from the audience one night and they ad-lib their way through a duet.

She is stunned to find out he is happily married---and that his "surprise" is an introduction to a British impresario who can give her her big break.

When a representative from the authorities tries to stop Marilyn (who is under sixteen) from going on, Carter steps in and spins a yarn about their being engaged.

She asks him to marry her, They elope as soon as he returns home from World War I. Frank persuades her to take the lead in “Sally”.

[6] Bosley Crowther condemned the film with faint praise in his June 24, 1949 review for The New York Times, opening with :”A couple of lively tap dances out of Ray Bolger's talented feet and three or four pleasant renditions of old familiar songs are the only rewards of any consequence that the patron is counseled to expect… Otherwise this Technicolored picture, based on the late Marilyn Miller's career, is a slow, unimaginative romance cut to obvious formula.

The least of its several shortcomings is the fact that it doesn't begin to tell the story of Miss Miller, who was a rare personality.

Instead, it follows the standard vaudeville-to-musical stardom plot,… So far as the details are presented, this could be the story of Tillie Doaks.”[7] According to Warner Bros. records, the film earned theatrical rentals of $3,089,000 in the United States and Canada and $1,041,000 internationally for a worldwide total of $4,130,000.