Nineteen-year-old Danny Flynn is imprisoned for his involvement with the I.R.A. in Belfast. He leaves behind his family and his sixteen-year-old girlfriend, Maggie Hamill. Fourteen years later, Danny is released from prison and returns to his old working class neighborhood to resume his life as a boxer.
A small-time Belfast thief, Gerry Conlon, is wrongly convicted of an IRA bombing in London, along with his father and friends, and spends 15 years in prison fighting to prove his innocence.