Major Jim Colton is a sympathetic leader who has a working relationship with Apache leader Cochise. Colton is undermined by corrupt and politically ambitious Indian agent Neil Baylor who sets up a false attack, and the abduction of a local farmer's son. While Colton is away investigating the matter, Baylor convinces Lieutenant Bascom that Cochise's band is to blame, and incites him to lead an expedition against the Apache band to return the boy.

Three years after the end of the Apache wars, peacemaking chief Cochise dies. His elder son Taza shares his ideas, but brother Naiche yearns for war...and for Taza's betrothed, Oona. Naiche loses no time in starting trouble which, thanks to a bigoted cavalry officer, ends with the proud Chiricahua Apaches on a reservation, where they are soon joined by the captured renegade Geronimo, who is all it takes to light the firecracker's fuse...

Indian scout Tom Jeffords is sent out to stem the war between the American settlers and Apaches in the late 1870s Arizona. He learns that the Indians kill only to protect themselves, or out of retaliation for white atrocities.