A rain storm wipes out the herd of horses Big John is selling to the Army. He decides to go north into Apache lands under the control of Chief Red Eagle to gather a new herd. Although wary of the Apaches, he and a crew go there. They are met by Red Eagle who wants peace. He agrees to give Big John three days to gather horses in return for which Big John agrees to send him 10 head of cattle each month for a year. Futhermore, Red Eagle asks that they trade brothers for the three days. Buck stays with the Apache where he becomes friends with everyone including Tanea the wife of White Horse who is a white man but the adopted brother of Red Eagle. The men recognize him as Pal Morrison who is despised for standing by while a group of whites were massacred. The horse hunt is successful and peaceful. A few days later White Horse rides into the ranch wounded looking for a doctor to tend to his wife. The Cannons get a doctor who treats White Horse and is forced by Buck at gunpoint to ride to ...