Overview:

June 27, 1980: a DC–9 flying over the Tyrrhenian Sea breaks up mid-air and crashes near the Italian island of Ustica, killing all 81 people on board. The official version blames the "structural failure" of the plane, but a young journalist smells a cover-up and starts to uncover the truth out of the 'invisible wall' of lies built by politicians and air force higher-ups.