William Royle is selling shares in a fake test oil well he has down Mexico way. Gene Autry gets involved because of pretty Luana Walters, who is helping padre William Farnum run an orphanage on an old Spanish land grant. They think they have oil on the land, but no one is interested in drilling, and they're running out of money. So Autry charms bandito Noah Beery Sr. With his singing and starts a scheme to drill on the orphanage's land.
It's a bit hokey and choppy, but there is the usual assortment of good music, including Smiley Burnette singing a song about not understanding Spanish to the tune of "Cielito Lindo. Some of the songs include the title tune and "Chiapanecas" played as dance music. Director George Sherman does a competent job without much flair.