Red is taking the injured sheriff O'Grady to Brimstone by train, but while on their way there an un(?)expected event occurs. This chapter is short and easy, the easiest chapter in the whole game, with only one enemy. You can spend your time talking to the the passengers, who each have a few different lines. If you're only interested in advancing in the story, talk to the man in front and get back to O'Grady, and the duel starts. Anyone who has played Red Dead Revolver can see that I, for ...