From 1992 to 1995, during the siege of Sarajevo, the only connection to the outside world for the ordinary people was through a secret passage hidden beneath a runaway at the Sarajevo airport. People called it The Tunnel, but it looked more like an underground sewer. If this tunnel could speak, it could tell thousands of sad stories. Once, the tunnel represented a choir′s last chance to leave the besieged city for their European tour.