In 1870s Arizona, Anne LeBeau (Joan Taylor) is caught between two cultures in a conflict that may kill her and her brother Armand (Lance Fuller). They're the children of a white French father and an Apache mother (the daughter of a chief, no less), and they find that they're equally despised by both sides. With a series of raids on the stage-line killing whites, and apparently carried out by the Apaches, there's very little prospect for peace in their lives. Enter Rex Moffet (Lloyd Bridges), sent in by the government to try and settle the situation -- instead of being a militarist, Moffet is a conciliator, much to the outrage of the townspeople, who want all of the Apaches driven out or killed, starting with the LeBeaus. When Moffet starts to fall in love with Anne (and visa versa), he must face the wrath of her embittered brother and the Apaches as well as the whites. It turns out that Armand -- who is college educated, and a lawyer, no less -- is the man leading the attacks, out of his bitterness and anger over the rejection he's faced by the whites all of his life. One thing that Rex has on his side is the truth, that the raids are actually the work of a small band of renegades working in tandem with opportunistic whites from the town. But can he stay alive long enough to uncover the identities of those responsible and prevent an Indian War?