The lives of a young man and woman, an infamous gangster and a group of street kids converge one day in a volatile New York City slum.

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.

Jimmy O'Brien (Robert Lowery)and Sammy Rubin (Sidney Miller), write jingle commercials for radio, and meet Mary Adams (Dona Drake), who wants to break into radio as a soloist for a band.

The owner and staff of a Hollywood nightclub struggle to keep their establishment from closing.

Two bumbling, small-time detectives are hired by a client to locate showgirls for an upcoming musical. However, the girls they find are homely and unattractive, but that soon changes when they discover a machine that turns them into beautiful chorus girls.

Freddie Rich and his band perform a selection of musical numbers.