Chile, September 1986. Tamara, commander of the communist guerrilla group Manuel Rodríguez Patriotic Front, and her comrades-in-arms set out to overthrow the military regime installed in 1973 by assassinating the dictator Augusto Pinochet.
During the last years of Pinochet's military regime, a group of militants from the "Manuel Rodríguez Patriotic Front" plan a prison break of political prisoners, through a tunnel that will take them 18 months to dig.