An Unknown Enemy

The regent of Mexico City works to weaken his main rival in the presidential succession by removing the National Security Directorate.

The students' voice grows louder despite their lack of organisation. However, the death of one of the student leaders and help from Barrientos pushes the students to become a more unified force.

The student movement grows stronger as they create the National Strike Council. With assistance from one of Barrientos' infiltrators, they orchestrate the biggest civil march ever witnessed.

Barrientos places guns among the students to make them seem like a bigger threat to President Diaz Ordaz. Meanwhile, the CIA attempts to convince military leaders to stage a coup.

President Ordaz organises a meeting with the students that proves to be a success. However, Barrientos tries to offset the gains made in the meeting by making a sense of chaos.

Corona Del Rosal persuades the president to use moles during the March of Silence, but Barrientos seeks to ruin his plans by provoking a fight.