U.S. soldiers are sent to quell a Communist rebellion in South America. A sympathizer, spy, at the Pentagon relays the details of the landing in a park by helicopter to his handler and the effort becomes a disaster. After bring in the first squad of ten, the helicopter is shot down while gaining altitude to leave. The two following helicopters are shot down before even reaching park with their soldiers. These two soldiers seeking cover, head for a wall only to find it a block long. We pick the story up as Brady hears a shot from behind them.