 On December 21, 1988, Pan American Airways flight 103, a Boeing 747 carrying 259 people on a London-New York flight, was brought down by a bomb over Lockerbie, Scotland, killing all on board, plus 11 people on the ground. This film goes back several years before the bombing, starting with Pan Am s botched "Alert" safety program to boost public confidence. Then, the accidental downing of an Iranian airliner by a US Navy warship pushed an extremist group to prepare a counter-attack, with a bomb disguised as a radio cassette player... while "Alert" is not heeding to the numerous safety concerns.