Peter Highman, a successful architect, is due to fly home from Atlanta to Los Angeles to be with his wife Sarah, who is about to give birth. On the way to the airport, he has a chance encounter with Ethan Tremblay, who is going to LA to be an actor and is planning to scatter his recently deceased father's ashes at the Grand Canyon. When Ethan misuses the words "terrorism" and "bomb" while talking to Peter, they are both escorted off the plane.