It’s a hot day in New York City, and the ironworkers at The World Trade Center Tower 4 are struggling to set the scorching steel of this 977 ft. skyscraper. Can the iron men stand the heat or will the high temperatures stop the men at Ground Zero. Up town, on the Alexander Hamilton Bridge, Jimmy Robbins and his crew must set two enormous steel pieces in the next 24 hours. In order to meet their deadline, they will work through the night - and contend with angry New York city drivers.