This section contains spoilers.
John Marston is taken to Mexico by Irish. Once there, he takes jobs for Colonel Agustin Allende, Vincente de Santa, Landon Ricketts, and Abraham Reyes and Luisa Fortuna's revolutionary army. Allende originally promises to help Marston locate Bill Williamson and Javier Escuella, but instead tries to have Marston killed. After this attack, Marston joins Reyes' revolutionary army.
The army tracks down Escuella in a fort called El Presidio. The army attacks this fort and Marston is able capture Escuella after learning the whereabouts of Williamson. The army then storms the palace where Williamson is hiding. During the fight, Fortuna, Reyes' lover is killed trying to spare Abraham from execution. Marston executes both Escuella and Williamson.
