California

When her husband dies en route to America, Martha Price and her daughter Hilary are left to carry out his dream: the introduction of Hereford cattle into the American West. They enlist Sam "Bulldog" Burnett in their efforts to transport their lone bull, a Hereford named Vindicator, to a breeder in Texas, but the trail is fraught with danger and even Burnett doubts the survival potential of this "rare breed" of cattle.

At a desolate relay station in the west, a stagecoach attendant and a stranded woman traveller are held captive by a band of escaped convicts.

Two young horse traders guide a Mormon wagon train to the San Juan Valley and encounter rugged terrain, the cutthroat Clegg gang, hospitable Navajo, and moral challenges on the journey.

Young scout Breck Coleman leads a wagon train along the dangerous trail to Oregon as he tries to get the affection of the beautiful pioneer Ruth Cameron and plans his revenge on the harsh scoundrels who murdered a friend of his in the past.