Pamela Mann is a widow in Mexico owned Texas and depends on her oxen for her livelihood. But Sam Houston is leading a drive for independence and needs her sturdy animals for cannon movement but the spirited Pamela resists all pleas.
Mary runs an outpost on the American frontier where her most important job is providing horses to the Union side. But a confederate Caleb is intent on derailing her operation until they meet over a horse's foal delivery.
Mine owner Jim Barker sends for detective Romer Maxwell suspecting high grade ore is being smuggled out. Romer tests several theories then focuses on Kate Hanson but complicates matters by falling in love with her daughter Sarah.
Dan and Mary Bartlett arrive in Murphy's Flats with little more then their faith and a diving suit. The residents don't comprehend how it works or helps in mining but when they need Dan to use it for violent reasons he stands by his convictions.
Iron fisted rancher Hank Lanier believes his son Jack needs a good education, bringing in Ralph Edmunds to teach him. But the teacher's arrival threatens Lanier's autocratic ways leading to a showdown.
Noted frontier explorer John Fremont is in gold rush California and finds himself in a contentious mining dispute. As the situation threatens to turn violent the future presidential candidate has the support of his faithful wife Jessie.
Luke Short aims to open a fine saloon in Dodge City but runs up against political boss Webster who prevents competition. Luke, with support of Mady, tries traditional methods but is forced to call in famous friends to prevail.
Lt. Wood is stationed in Arizona Territory during an Apache uprising but is more compassionate then his commander. When a deadly illness breaks out among the Indians he is willing to treat them but Geronimo must surrender first.