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 fighting to break free the truth from the 'invisible wall' of lies built by politicians and air force higher-ups.

Young men with no future have little in the present as well. Natale is released from prison: he takes up with his friends again but none can find work. Claudio, from Palermo, gets out of juvenile detention in Naples and he's met by Vita, a girl who's come from home to run away with him. Where can they go? A young dad, whose potato stall at the market is shut down because he has no permit, takes his two small children to the beach and yells at them. Mario, gay, a prostitute in drag, gets a visit from his mom; he offers tea, then finds the water to his apartment is shut off. Social workers drop by, parole officers file reports. What hope is there? What options besides crime?

A teacher discovers his calling. Marco relocates to Palermo from Milan and takes a job teaching in a reform school while he waits for a high school position. He tries to understand and motivate his handful of students, reading them colloquial poetry, encouraging them to stand up for their rights, finding out about their histories. Natale, in for murder, enamoured of the Mafia, the King Rat within the group; Mery, a drag queen, arrested for assault when defending himself, in love with Mario and, in daylight, rejected by all; Pietro, illiterate, muscular, believing his destiny is set; the callow Claudio, vulnerable, learning to harden himself. What can Mario learn and do in such a short time?