电影讲述了一个被1998年的奥马汽车爆炸案弄得支离破碎的家庭的故事。 1998年8月15日,在北爱尔兰的奥马市,下午2时30分,鄂尔斯特电视台接到炸弹警报,说是一辆陷阱炸弹汽停靠在法院大楼附近。警察和安全人员立刻把法院周围的人群向商业街疏散。但正好相反,炸弹暗藏在停在商业街的一辆汽车里。下午3时10分,250公斤的炸弹爆炸,炸死了29人,炸伤了250多人。这是在北爱冲突中造成死伤最惨重的一次爆炸案。爱尔兰共和军的离心团体“真正的爱尔兰共和军”事后承认作案。一个月之后,作案者继续逍遥法外。愤怒的奥马的居民决定组成一个援助受害者的协会......15 August 1998: the Real IRA exploded a bomb on a crowded street in Omagh, just into Northern Ireland, to halt the Good Friday accords and peace process; 29 people died. Families formed the Omagh Support Group to press the police in their inquiries. The film focuses on the Gallagher family, who lose their son Aiden. His father, Michael, a mechanic, becomes chair of the support group. The press for answers strains his relationship with his wife. High-ranking police speak in bromides. Shadowy figures offer intelligence that calls into question the integrity before and after the bombing of the Royal Ulster Constabulary and its Special Branch. Will the murders remain unsolved?