When a 747 collides with a small aircraft leaving the flight crew incapacitated or dead. US Airlines 409 takes off from Washington Dulles Airport at 5am for a cross country red eye flight to San Francisco. Due to fog up and down the California coast flight 409 diverts to Salt Lake City putting them on a collision course with the small twin engine aircraft. Lead flight attendant Nancy Pryor is left to fly the wounded 747 through the mountainous of northern Utah.
