After losing his daughter in the bombing of Pan Am Flight 103, Dr Jim Swire begins to look for the truth.

While Jim persists in his quest for truth and justice, authorities indict two suspects, Abdelbaset al-Megrahi and Al Amin Khalifa Fhimah, for the bombing, both presumed to be Libyan intelligence operatives.

After 12 long years, the Lockerbie trial finally begins. But as the trial unfolds, Jim gradually questions the official evidence against the suspects.

Convinced they have the wrong man, Jim grows closer to the convicted Abdelbaset al-Megrahi. As he embeds himself within Megrahi's appeal case and the conspiracy theories swirling around it, he becomes increasingly isolated from his family.

Jim is left at a loss when Megrahi gives up his appeal in return for release on compassionate grounds. Questioning everything he has come to believe, Jim wonders if he will ever know the truth.