In the mid-19th century, Senator William J. Tadlock leads a group of settlers overland in a quest to start a new settlement in the Western US. Tadlock is a highly principled and demanding taskmaster who is as hard on himself as he is on those who have joined his wagon train. He clashes with one of the new settlers, Lije Evans, who doesn't quite appreciate Tadlock's ways. Along the way, the families must face death and heartbreak and a sampling of frontier justice when one of them accidentally kills a young Indian boy.

Kirk Douglasas Sen. William J. Tadlock
Robert Mitchumas Dick Summers
Richard Widmarkas Lije Evans
Lola Albrightas Rebecca 'Becky' Evans
Jack Elamas Preacher Weatherby
Stubby Kayeas Sam Fairman
Michael McGreeveyas Brownie Evans
Harry Carey Jr.as Mr. McBee
Connie Sawyeras Mrs. McBee
Michael Witneyas Johnnie Mack