A sequel to Doc is based on the true events of the gunfight at the O.K. Corral and Wyatt Earp's survival against a backdrop of volatile politics in 1881 America.
After being taught in a boarding school run by whites that Navajo is a useless language, Ned Begay and other Navajo men are recruited by the Marines to become Code Talkers, sending messages during World War II in their native tongue.