After being nabbed while trying to stow away on board an ocean liner en route to Hawaii, young Bobby Breen sings for his travel fare and, along with sidekick Pua, turns detective to recover stolen naval documents from crooks
Bobby Breen
as Billy Coulter
Ned Sparks
as Strings
Irvin S. Cobb
as Captain O'Hare
Gloria Holden
as Mrs. Milburn
Warren Hull
as Commander Milburn
Mamo Clark
as Hina
Raymond Paige
as Orchestra Director
Aggie Auld
as Hula Dancer
Cy Kendall
as Hawaiian Policeman
Herbert Rawlinson
as Mr. Harlow
William Harrigan
as Blake
Juanita Quigley
as Doris Milburn