Chronological account of the events that culminated in the massacre of students in Tlatelolco in 1968.
| Directing | Óscar Menéndez | Director |
| Writing | Óscar Menéndez | Writer |
| Writing | José Revueltas | Writer |
| Crew | Óscar Menéndez | Cinematography |
| Crew | Antonio Castellanos | Cinematography |
| Crew | Mariano Sánchez Ventura | Cinematography |
| Crew | Armando Zayas | Cinematography |
| Crew | Rodolfo Sánchez Alvarado | Cinematography |
| Sound | Rene Villanueva | Music |
| Sound | Mario Orozco Rivera | Music |
| Editing | Enrique Pérez Escalona | Editor |
| Editing | Óscar Menéndez | Editor |
| Production | Óscar Menéndez | Producer |
| Production | Antonio Rosete | Producer |
| Production | María Antonieta Lozano | Producer |
| Production | Pablo Alvarado | Producer |
| Production | Efraín Bermúdez | Producer |
| Production | Carlos Medina | Producer |