This unflinching drama tells the story of the passengers, crew, and flight controllers who watched in dawning horror as United Airlines Flight 93 became the fourth hijacked plane on the day of the worst terrorist attacks on American soil: September 11, 2001. Powerfully recreating the doomed trip in actual time, from takeoff to hijacking to the realization by those onboard that their plane was part of a coordinated attack unfolding on the ground beneath them, this is one of the first and best films to dramatize the heartbreaking events of 9/11.