Scat Sweeney, and Hot Lips Barton, two out of work musicians, stow away on board a Rio bound ship, after accidentally setting fire to the big top of a circus. They then get mixed up with a potential suicide Lucia, who first thanks them, then unexpectedly turns them over to the ship's captain. When they find out that she has been hypnotized, to go through a marriage of convenience, when the ship reaches Rio, the boys turn up at the ceremony, in order to stop the wedding, and to help catch the crooks.
Bing Crosby
as Scat Sweeney
Bob Hope
as Hot Lips Barton
Dorothy Lamour
as Lucia Maria de Andrade
Gale Sondergaard
as Catherine Vail
Frank Faylen
as Trigger
Joseph Vitale
as Tony
George Meeker
as Sherman Mallory
Frank Puglia
as Rodrigues
Nestor Paiva
as Cardoso
Robert Barrat
as Johnson
Stanley Andrews
as Capt. Harmon
Harry Woods
as Ship's Purser
