On January 30, 1972, the British Army shot dead 13 unarmed civilians on a civil rights march in Derry, Northern Ireland. At the subsequent Tribunal of Inquiry, Lord Chief Justice Widgery exonerated the soldiers and blighted the reputation of those who were killed and wounded. In 1998 a new Tribunal of Inquiry was announced into the day that has become known as "Bloody Sunday". This documentary follows the course of the Inquiry from the point of view of the families of the victims, as they travelled between Derry and London over a five year period.