Jimmy Durante is jungle movie star Schnarzan the Conqueror, but the public is tiring of his fake lions. When Baron Munchausen comes to town with real man-eating lions, Durante throws him a big Hollywood star-studded party so that he might use the lions in his next movie. But, his film rival sneaks into the party to buy the lions before Durante.
President Franklin Roosevelt appoints a theatrical producer as the new Secretary of Amusement in order to cheer up an American public still suffering through the Depression. The new secretary soon runs afoul of political lobbyists out to destroy his department.
When the Manhattan investment firm of Sherwood Nash goes broke, he joins forces with his partner Snap and fashion designer Lynn Mason to provide discount shops with cheap copies of Paris couture dresses.
Janie lives to dance and will dance anywhere, even stripping in a burlesque house. Tod Newton, the rich playboy, discovers her there and helps her get a job in a real Broadway musical being directed by Patch. Tod thinks he can get what he wants from Janie, Patch thinks Janie is using her charms rather than talent to get to the top, and Janie thinks Patch is the greatest. Steve, the stage manager, has the Three Stooges helping him manage all the show girls. Fred Astaire and Nelson Eddy make appearances as famous Broadway personalities.
A fledgling producer finds himself at odds with his workers, financiers and his greedy ex-wife when he tries to produce live musicals for movie-going audiences.
Gopher City Kansas hosts a beauty contest. The winner, Elvira Plunkett, and her mother go to Hollywood. The Chamber of Commerce also provides Elvira with an agent, Gopher City's own Elmer J. Butz. Elmer likes Elvira and the shy Elvira likes him, but Mrs. Plunkett, a formidable woman, has little use for hapless Elmer. On the train west, they meet movie star Larry Mitchell, who takes a shine to Elvira and helps her meet MGM directors once they get to Tinsel Town. Elmer, meanwhile, wants to help Elvira with her career and he also wants to be her man. Movie stardom does come to the Gopher City entourage, but to whom is a surprise. And who will win the lovely Elvira's hand?
Sally is an orphan who was named by the telephone exchange where she was abandoned as a baby. In the orphanage, she discovered the joy of dancing. Working as a waitress, she serves Blair (Alexander Gray), and they both fall for each other, but Blair is engaged to socialite Marcia. Sally is hired to impersonate a famous Russian dancer named Noskerova, but at that engagement, she is found to be a phoney. Undaunted, she proceeds with her life and has a show on Broadway, but she still thinks of Blair.
Joe Lane, radio entertainer and songwriter, learns that the manager of the studio, Arthur Phillips, has made improper advances to his wife, Katherine. Infuriated, Lane engages him in a fight, and the encounter results in Phillips' accidental death. Joe goes to prison for a few years, and when he is released he visits his son, Little Pal, at school and is begged by him to run away together.
The vaudeville act of Harriet and Queenie Mahoney comes to Broadway, where their friend Eddie Kerns needs them for his number in one of Francis Zanfield's shows. When Eddie meets Queenie, he soon falls in love with her—but she is already being courted by Jock Warriner, a member of New York high society. Queenie eventually recognizes that, to Jock, she is nothing more than a toy, and that Eddie is in love with her.
A young Jewish man is torn between tradition and individuality when his old-fashioned family objects to his career as a jazz singer. This is the first full length feature film to use synchronized sound, and is the original film musical.