Produced by the Radio Venceremos System, chronicles the first decade of the guerrilla broadcaster that became a crucial communication tool for the FMLN during El Salvador’s civil war. Through archival footage, radio transmissions, testimonies, and scenes of daily life in liberated zones, the film traces the station’s military, political, and cultural role, from reporting on combat operations and peasant struggles to fostering literacy, music, and international solidarity. The documentary portrays Radio Venceremos not only as a strategic instrument of war, but as a symbol of resistance, collective organization, and revolutionary memory.

It narrates the development of this guerrilla group, a member of the historic FMLN. At the beginning, Lieutenant Colonel Domingo Monterrosa Barrios speaks about the enemy force he faced. On March 23, 1983, the political and military contingents of the Rafael Arce Zablah Brigade (BRAZ) arrived in the Agua Blanca plains, north of Morazán. From different points in the eastern part of the country, the five battalions arrived, commanded by their respective political and military leaders. The main purpose of this gathering was to demonstrate to the world the existence of that guerrilla army and the military achievements it had achieved up to that point.