Just days after Christmas in 2014, an Airbus A320 en route to Singapore disappears over the Java Sea. A massive search confirms the worst: the plane has crashed, killing all 162 on board. Speculation runs wild about what could have brought the airliner down, and an international team of experts comes together to help determine what caused AirAsia Flight 8501 to plummet from the sky. Discover how a mysterious action by the captain set off a deadly sequence of events that ultimately doomed the aircraft.