Sam Coyote, Walker's friend, the Sheriff at the Cherokee reservation has been seeing Nora Shannon, an archaeologist who's been working on the reservation. When he proposes and she refuses things between them go bad. At the same time an oil magnate who knows that there's oil under Shannon's site plans to get it. And part of his plans is to kill Nora and frame Coyote. While Walker has no doubt that Coyote's innocent; the Feds don't think so. So in order to keep them from taking Coyote off the reservation and buy some time to prove his innocence, Walker has Coyote's deputy arrest him and with help from the Tribal Judge to stall the Feds.

Una empresa está vertiendo contaminantes en el río donde los nativos americanos nadan y pescan para sus familias tribales. Los niños comienzan a morir. Un grupo de cherokees decide resolver el problema por sí mismos. Los Rangers trabajan con el sheriff Sam Coyote para encontrar pruebas del vertido.

A Shaman transports Walker back in time 100 years to prove the innocence of a Comanche Indian. In the present, Walker must prove the innocence of another Comanche, who is accused of murder.

Un nuevo medicamento llamado White Buffalo llega a las calles y Alex, Sydney y un niño pequeño encuentran a los traficantes de drogas mientras están de excursión. Sydney es disparada por los traficantes de drogas. Walker investiga una estatua de un búfalo que parece estar llorando lágrimas.