Inspired by the resistance of a creative underground community from the rock and punk scene, American aid worker Bill Carter comes up with an unconventional idea during the Bosnian war: He asks the Irish rock band U2 to draw the public's attention to the war, the state of siege in Sarajevo and the struggle of its civilians. The band agrees and, on their 1993 tour, shows live interviews with people in Sarajevo who describe their plight to the concert audience. Filmmaker Nenad Cicin-Sain's exciting and inspiring documentary shows that music can indeed contribute to a better world.