In the 1970s, as El Salvador moved irrevocably closer to civil war, one man was known as the voice of the poor, the disenfranchised, the disappeared. Appointed Archbishop in 1977, Monsenor Oscar Romero worked tirelessly for peace, justice and human rights, while in constant personal peril. Using the power of the pulpit to denounce official corruption, he inspired millions with his nationally broadcast sermons, until in March of 1980, he was shot dead at the altar. With rare recordings and film footage, and a wide range of interviews with those whose lives were changed by Romero, including church activists, human rights lawyers, former guerrilla fighters and politicians, Monsenor is a timely portrait of the man's quest to speak the truth, though it cost him his life.