What story does Unforgiven tell about William Munny?

In the 1992 revisionist western Unforgiven, William Munny is portrayed as a former outlaw and gunslinger who has abandoned his violent past to become a hog farmer and father, largely due to the influence of his late wife.1

The story follows Munny as he is drawn back into his old life after being recruited by the Schofield Kid to collect a bounty on two cowboys who mutilated a prostitute in Big Whiskey, Wyoming. Accompanied by his old partner, Ned Logan, Munny travels to the town, where he faces brutal opposition from the sheriff, Little Bill Daggett.1

The narrative serves as a grim exploration of the emptiness of a life dedicated to violence. After Daggett beats Logan to death, Munny returns to Big Whiskey to exact revenge. In a climactic confrontation, he kills the tavern owner and several deputies before savagely murdering Daggett, ultimately succumbing to the cycle of violence he had once sought to escape.1