In Tom Hammonds briefcase was the last photograph taken of him and his son Luke. A moment of happiness caught on camera: father and son at a dinner together days before Christmas. The photo was to become Tom's most treasured possession, for the day after it was taken, his son Luke boarded Pan Am flight 103 to New York. Tom decides to hunt down the thieves and to find the last photograph. During his search, Tom tries to come to terms with what had happened ten years before. He had never been able to talk about it, not to his best friend nor to anyone else. The pursuit for the photograph reignites those days and he begins to recollect the months that lead to the tragedy. How his son had persuaded him to take the trip to New York and spend Christmas with his first love whom he had met just three months before. The film moves gently from past to present. Will he find the thieves and in turn find the photograph? And will his search help regain the sanity he lost on that murderous night?