An orphan is provisionally adopted by the manager of a hotel populated by show business people. The hotel's owner doesn't like the entertainers and wants the girl returned to the orphanage.
Stan and Ollie are mousetrap salesmen hoping for better business in Switzerland, with Stan's theory that because there is more cheese in Switzerland, there should be more mice.
Rebecca's Uncle Harry leaves her with Aunt Miranda who forbids her to associate with show people. But neighbor Anthony Kent is a talent scout who secretly set it up for her to broadcast.
After losing a coveted role in an upcoming film to another actress, screen queen Mona Marshall (Lola Lane) protests by refusing to appear at her current movie's premiere. Her agent discovers struggling actress Virginia Stanton (Rosemary Lane) -- an exact match for Mona -- and sends her to the premiere instead, with young musician Ronnie Bowers (Dick Powell). After various mishaps, including a case of mistaken identity, Ronnie and Virginia struggle to find success in Hollywood.
Lady Alyce Marshmorton must marry soon, and the staff of Tottney Castle have laid bets on who she'll choose, with young Albert wagering on 'Mr. X'. After Alyce goes to London to meet a beau she is restricted to the castle to curb her scandalous behavior. Albert then summons Jerry to Alyce's aid in order to 'protect his investment'.
Nina Maria Azara is the beautiful and alluring singing spy for Spain during the Napoleonic Wars. Her mission is to seduce French officers, in order for them to reveal Napoleon's intentions toward Spain. She is sent to Bayonne, France to gather military secrets. Prior to this, she meets Don Diego while performing at a club. Unknown to her, Don Diego is actually Captain Andre, who is sent to Spain to spy on her. While in France, Nina discovers Diego's true identity, only after she has fallen in love with him. Nina Maria outwits her potential captors, returns to Spain and goes into hiding. Napoleon's troops invade Spain, resulting in Nina's capture. In a strange twist of fate, Nina and Captain Andre are reunited, but the 2 nations are now at war...
Heidi is orphaned and her uncaring maternal Aunt Dete takes her to the mountains to live with her reclusive, grumpy paternal grandfather, Adolph Kramer. Heidi brings her grandfather back into mountain society through her sweet ways and sheer love. When Dete later returns and steals Heidi away to become the companion of a rich man's wheelchair-bound daughter, the grandfather is heartsick to discover his little girl missing and immediately sets out to get her back.
Steve Raleight wants to produce a show on Broadway. He finds a backer, Herman Whipple and a leading lady, Sally Lee. But Caroline Whipple forces Steve to use a known star, not a newcomer. Sally purchases a horse, she used to train when her parents had a farm before the depression and with to ex-vaudevillians, Sonny Ledford and Peter Trott she trains it to win a race, providing the money Steve needs for his show.
Arthur Tracy and Lilli Palmer star in this 1930's British romantic drama. With his voice faltering due to nerves, celebrated stage performer "The Street Singer" (Tracy) parts company with the theatre and goes to live in a gypsy camp where he meets and falls in love with Susan (Palmer), an attractive young woman who is unaware of his fame.
Doctor Hugo Hackenbush, Tony, and Stuffy try and save Judy's farm by winning a big race with her horse. There are a few problems. Hackenbush runs a high priced clinic for the wealthy who don't know he has his degree in Veterinary Medicine.
The partners of stage-producer J. J. Hobart gamble away the money for his new show. They enlist a gold-digging chorus girl to help get it back by conning an insurance company. But they don’t count on the persistence of insurance man Rosmer Peck and his secretary Norma Perry.
Chin-Ching gets lost in Shanghai and is befriended by American playboy Tommy Randall. She falls asleep in his car which winds up on a ship headed for America. Susan Parker, also on the ship, marries Randall to give Chin-Ching a family.
The three Craig sisters – Penny, Kay, and Joan – go to New York to stop their divorced father from marrying gold digger Donna Lyons and re-unite him with their mother.
On leave, a sailor falls in love with a young lady aspiring to become a Broadway dancer, but their relationship is jeopardized by an established Broadway star, who is also enamored by him.
Bessie and Winston "Slug" Winters are married coaches whose mission is to whip their college football team into shape. Just in time, they discover a hillbilly farmhand and his sister. The hillbilly farmhand's ability to throw melons enables him to become their star passing ace.
The "Caliban-Ariel" romance of fiftysomething John Barrymore and teenager Elaine Barrie is spoofed in this delightful 20th Century Fox musical. Adolphe Menjou plays the Barrymore counterpart, a loose-living movie star with a penchant for wine, women, and more wine. Alice Faye plays a nightclub singer hungry for publicity. Her agent (Gregory Ratoff) arranges a "romance" between Faye and Menjou. Eventually Faye winds up with Michael Whalen, allowing Menjou to continue his blissful, bibulous bachelorhood. Sing, Baby, Sing represented the feature-film debut of the Ritz Brothers, who are in top form in their specialty numbers--and who are awarded a final curtain call after the "The End" title, just so the audience won't forget them (The same device was used to introduce British actor George Sanders in Fox's Lancer Spy [37]).