The police become involved when the callers to a 1-900 number begin turning up dead after a visit from the beautiful operator.
Self (archive footage)
From the A&E "Biography" series, a review of the birth, development and cinematic history of Betty Boop, the flapper cartoon character who has been a popular icon since the 1930s.
Lucky Morgan
Kent wants the Allen ranch. So he has Steve and his men rustle their cattle using Pete as an informant. When the Trigger Pals Lucky, Stormy, and Fuzzy fight back, Kent frames Stormy for the rustling.
A French language teacher finds a fortune in lost jewellery, manages to trace the owner and returns them. His picture is splashed all over the papers prompting several people to report him as a crook in a case of mistaken identity, causing him all sorts of trouble with the police.
Singer in the show (uncredited)
Mary wants to marry a gangster because that is where the money is. Unfortunately, the life expectancy and finances of a gangster are unstable.
Writer
Ernest Truex and family throwing a dinner party.
Two young girls arrive in Holywood determined to be movie stars.
Mr. Chesterfield
Susie and her pals pretend they're society swells.
Percy
Mary is an impetuous romantic who marries British aristocrat Lord Philip Rexford on a whim. Their marriage is successful, though, and they grow closer over the years. Then, a trip to the Italian Riviera unexpectedly reunites Mary with her former beau, Tommie. After some vicious gossip makes Rexford distrust her, he begins work on a divorce. Mary must now choose between the man she has married and the man she once loved.
Art, the Songwriter
A carnival girl pretends to be Swedish in order to win a movie role.
Art
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.
Musical short showcasing Jarrett and Nearing
James 'Jenny' Lind
A sculptor who doesn't want to have any part of World War I is shamed by his girlfriend into joining the army. He becomes a fighter pilot, and undergoes a complete personality change.
Himself - Singer
Returning to New York on an ocean liner, Lois Whiteman, Harry Barris and Art Jarrett decide to visit composer Burton Lane, who is also aboard, to rehearse a little. Saxophonists Benny Krueger and Rudy Wiedhoeft meet and perform with their instruments.
Himself
Betty Boop entertains at a gambling den with Bimbo in attendance; Arthur Jarrett (film debut) sings the title song with a Bouncing Ball.