Larry Martin (Don Ameche) is an American entertainer in the Casino Samba in Rio de Janeiro. He has a skit in his show, making fun of the womanizing Baron Manuel Duarte (also Ameche). On one particular evening, the Baron and his wife, Baroness Cecilia Duarte (Alice Faye) come to see Larry's impersonation. To the surprise of the couple, the act is amazingly realistic. Backstage, the Baron meets Larry's girlfriend, Carmen (Carmen Miranda), and invites her to a party he is going to hold. Carmen declines.