Red Dead Redemption Episode 15: The Demon Drink

"John Marston arrives to see Luisa Fortuna's sister comforting their mother in front of their house. Marston learns that the family expects a revolution in the near future, led by Abraham Reyes. The family is going to hide out in the hills, except for her sister, who will have to flee because of the way women are treated. Luisa herself has decided to stay. Luisa then talks Marston into take her sister, Miranda, to the docks where she'll be shipped off to work for a man in Yucatán."
"In exchange for aid in locating Javier Escuella, Marston is sent to pillage and destroy the town of Tesoro Azul that is suspected of containing rebels."