Karanina "Nina" Novak, is befriended by Nifty, the leader of a four-piece orchestra, and in return, secures an engagement for them at the Little Aregal Cafe, with herself as the vocalist, by pretending she once knew the King or Aregal back in the old country. Steve shows up pretending to be the King of Aregal, and complicates the growing romance between Nina and Nifty. When Steve runs off with Opa, the real King of Aregal (also Steve) appears and complicates things again.
Ray Bolger
as Nifty Sullivan, a Jack
Anne Shirley
as Karanina 'Nina' Novak, the Jill
June Havoc
as Opal
Desi Arnaz
as Steve Sarto / King Stephan VIII of Aregal
Jack Durant
as Noodle McArdle
Eddie Foy Jr.
as Happy McScud, a Jack
Fritz Feld
as Mr. Hoople
Henry Daniell
as Bobo
Joseph E. Bernard
as Jailer (uncredited)
William Blees
as Eddie, a Jack (uncredited)
Fortunio Bonanova
as Mike - Nightclub Owner (uncredited)
Jack Briggs
as Nat, a Jack (uncredited)
