Hot Breath Harry is a hot trumpeter at a jazz club. He finds himself drafted into the Army, where he's assigned to be the bugler of an African-American company. But everyone hates the bugler, because he blows reveille at the ungodly hour of 5 AM sharp.
Discovery by Flo Ziegfeld changes a girl's life but not necessarily for the better, as three beautiful women find out when they join the spectacle on Broadway: Susan, the singer who must leave behind her ageing vaudevillian father; vulnerable Sheila, the working girl pursued both by a millionaire and by her loyal boyfriend from Flatbush; and the mysterious European beauty Sandra, whose concert violinist husband cannot endure the thought of their escaping from poverty by promenading her glamor in skimpy costumes.
When Edward Creighton leads the construction of the Western Union to unite East with West, he hires a Western reformed outlaw and a tenderfoot Eastern surveyor.