Rancher Clay and his brother, Steve, head out across the Sonora mountain pass, followed by Lednov, an ex-con seeking revenge on Clay for putting him behind bars. Clay and Steve unexpectedly cross paths with a group of dance hall girls -- including Mary, Marcia and Helen -- whose stagecoach has broken down, and help them get to the nearest ranch, where Lednov unfortunately catches up to Clay.

China Valdes joins the Cuban underground after her brother is killed by the chief of the secret police, Ariete. She meets and falls in love with American expatriate Tony Fenner. Tony develops a plan to tunnel under the city's cemetery to a plot owned by a high official, assassinate him, and blow up the whole Cuban hierarchy at the ensuing state funeral. Together with a band of dedicated revolutionaries, they begin digging.

Helen Chernen pushes her younger sister Katherine into show business in order to escape their small town poverty.