When rich young Englishman, Born Gallant, arrives in America after the death of his father, he goes first to see family friend William Pinkerton. The boss of the famous detective agency at once gives him an assignment: the head of the Kansas City office has been murdered, there has been an attempt on Pinkerton's life, and he wants to know why. From that day on, Gallant finds himself embroiled in a fight to the death against gunmen hired by warring cattlemen fighting against reorganisation of their industry. Helped by young trainee lawyer, Melody Lake, and newspaperman, Stick McCrae, Gallant's fight to bring the killers to justice takes him from Kansas City to the hell-hole of Salvation Creek. Will he prevail in the final, bloody showdown?