Afflicted with a terminal illness John Bernard Brooks, the last of the legendary gunfighters, quietly returns to Carson City for medical attention from his old friend Dr. Hostetler. Aware that his days are numbered, the troubled man seeks solace and peace in a boarding house run by a widow and her son. However, it is not Brooks' fate to die in peace, as he becomes embroiled in one last valiant battle.
Cole Thornton, a gunfighter for hire, joins forces with an old friend, Sheriff J.P. Hara. Together with an old indian fighter and a gambler, they help a rancher and his family fight a rival rancher that is trying to steal their water.