A wealthy woman, vacationing in Acapulco with her stuffy husband, stumbles upon evidence that she is being stalked by an international jewel thief and murderer.

When a wandering mercenary named Hogan rescues a nun called Sister Sara from the unwanted attentions of a band of rogues on the Mexican plains, he has no idea what he has let himself in for. Their chance encounter results in the blowing up of a train and a French garrison, as well as igniting a spark between them that survives a shocking discovery.

American engineer Steve Corey comes to Mexico to work at one of the mining projects owned by Katherine Beckman and her half-brother Paul. He meets Katherine, and the man he is replacing, Bill Maxton, tells him that Katherine is his for the asking..."all you have to do is touch her---she goes off like fireworks. There were plenty of guys before me, and there'll be plenty after me." Steve finds Katherine as advertised but he falls in love with her. Once he sees that the romance is for real, brother Paul is more than a little displeased at this turn of events and brings back one of Katherine's earlier flames, Gus Cole, to tempt Katherine away from Steve.

After falling for Alicia, greedy and powerful Mexican landowner Carlos has her fiancé thrown in prison on a bogus charge. To trick Carlos into releasing her man, Alicia teams up with her Aunt Delfina and tries to convince Carlos that he's a ghost.

Alberto is a journalist who remembers an event 15 years ago, when his friend Gabriel saved a girl from a fire suffering third-degree burns. When he tells the story to his friends, one of them asks him to write it with realism, so Alberto comes back to his old town to meet Gabriel again.