For thirty years, Northern Ireland was scarred by a conflict between Catholics and Protestants. In 1998, the Good Friday Agreement brought an end to the Troubles, thirty years of attacks and assassinations marked by state secrecy. To this day, more than half of the 3,500 deaths in the conflict remain unexplained. More than 20 years after the conflict, five bereaved families are fighting to know the truth about the death of their loved ones. A truth, that the British government hides from them. They accuse the British government, the army, the police, and the MI5 of obstructing justice. They denounce the collusion – in the form of secret and sometimes deadly deals – between the British institutions and terrorist groups. This film tells their story.