Paul McCartney was in New York on the day of the attacks, and saw firsthand the destruction and tragic consequences of one of the most horrific days in U.S. history. Directors Maysles and Kaplan, along with editor Ian Markiewicz have assembled extraordinary, intimate, never-before-seen footage of McCartney rehearing for the benefit concert, connecting with New Yorkers on the city streets and storytelling behind the scenes at interviews with Dan Rather, Howard Stern and others. Additionally, the film features performances form the benefit concert itself and unparalleled access backstage with McCartney and luminaries from the worlds of music, Hollywood and politics, including David Bower, Steve Buscemi, Eric Clapton, President Bill Clinton, Sheryl Crow, Leonardo DiCaprio, Harrison Ford, Mick Jagger, Jay-Z, Billy Joel, Elton John, Stella McCartney, Governor George Pataki, Keith Richards, James Taylor, Pete Townshend, and many more.