Tuesday, September 11, 2001, started as just another day. At 8:47 a.m., the city that never sleeps would be jolted into its worst nightmare as a chain of tragic events unfolded, changing the lives of New Yorkers and America forever. With the Honorable Rudolph W. Giuliani as guide, "In Memoriam: New York City 9/11/01" follows the mayor and his staff from their first realization of what had occurred, through despair and tears, to a newfound strength that would emerge in the spirit of a new America. The documentary presents a panoramic and unique historical record of that fateful day in New York City. "In Memoriam" incorporates video footage and photography from 16 news organizations and 118 New Yorkers, much of it never before seen, to tell the story of the worst attack in U.S. history.