After spending forty years in prison for a crime he didn't commit, Ezekiel Cartwright has just one thing on his mind: he sets out to track down the men who set him up and then tell them, before he dies, that he has forgiven them. So begins one of the strangest stories of the old West; the tale of a man who set out on the forgiveness trail. Cartwright finds that forgiving the men proves a lot harder than he could have guessed and, before it is all over, he has been compelled to take up a gun again and deal with the sons of the men who so cruelly wronged him all those years ago.