The town of Big Whisky is full of normal people trying to lead quiet lives. Cowboys try to make a living. Sheriff 'Little Bill' tries to build a house and keep a heavy-handed order. The town whores just try to get by.Then a couple of cowboys cut up a whore. Dissatisfied with Bill's justice, the prostitutes put a bounty on the cowboys. The bounty attracts a young gun billing himself as 'The Schofield Kid', and aging killer William Munny. Munny reformed for his young wife, and has been raising crops and two children in peace. But his wife is gone. Farm life is hard. And Munny is no good at it. So he calls his old partner Ned, saddles his ornery nag, and rides off to kill one more time, blurring the lines between heroism and villainy, man and myth.
Taking place in the American Northwest in the early 1880s, the film dramatizes the last seven months in the life of famed outlaw Jesse James, beginning with the Blue Cut train robbery of 1881 and culminating in his assassination at the hands of Robert Ford the following April. In the time between these two fateful events, the young and jealous Ford befriends the increasingly mistrustful outlaw, even as he plots his demise.