March 1932, New York. Dan Shackelton is an Irish migrant. Like many of his fellow countrymen, he has found work on the construction site of the Rockefeller Center. He is to replace Ryan Murphy, a worker who died on the site. Dan works with a quiet, broad-shouldered man named Giant who is in charge of informing Ryan Murphy's family of the news. But Giant decides not to say anything. Instead, he sends a substantial sum of money accompanied by an unsigned, typewritten letter. When he receives a response from Ryan's widow, Mary Ann, Giant writes to her again, tangling himself up in a web of lies. Little by little, the enigmatic Giant starts to come out of his shell, until one day, when Mary Ann shows up in New York with her two children, ready to join her husband.