New York City, 1932. The country is in the throes of the Great Depression, the previous decade's boom of Italian, Irish, and Jewish immigrants led to unprecedented urban expansion, and steelworkers risk life and limb building Manhattan skyscrapers. In "Men at Lunch," director Seán Ó Cualáin tells the story of "Lunch atop a Skyscraper," the iconic photograph taken during the construction of Rockefeller Center that depicts eleven workmen taking their lunch break while casually perched along a steel girder 850 feet above the street. For 80 years, the identity of the eleven men - and the photographer that immortalized them - remained a mystery. But at the start of the 21st century, the photograph finally began to give up some of its secrets. Part homage, part investigation, "Men at Lunch" tells the story of an unprecedented race to the sky and of the immigrant workers that built New York.