A middle-aged mail room clerk and crossword aficionado, Robert Cunningham, overhears a terrorist conspiracy in midtown Manhattan one afternoon. His desire to be good citizen drives him to obsession as he follows the believed terrorist throughout the city. Meanwhile a police detective attempts to discover who the mysterious person is that keeps calling the NYC Safeline and leaving vague messages about snipers and plans to shoot people. Did Robert really hear what he thought he did and if so can he stop it when no one will believe him?