Two struggling musicians, Scat Sweeney and Hot Lips Barton, stow away on a ship to Rio after accidentally setting fire to a circus tent. They become entangled with Lucia, a woman who has been hypnotized into marrying a man she doesn't love, and they must intervene to stop the wedding and catch the crooks behind the scheme.

Road to Rio
Two hapless performers inadvertently thwart the devious schemes of a master hypnotist, who is using her niece under her spell to marry a wealthy and domineering suitor.