you know, what's going on? >> at 2:40 a.m., a worried air traffic control tower alerts malaysia airlines. they've lost contact with the plane. flight 370 has disappeared. by 6:30 a.m., the sun is rising over beijing. the same time, flight 370 is scheduled to land. but there is no plane and no sign of phillip wood, paul weeks and the 237 other passengers and crew members on board. coming up, the news no one could prepare for. >> after more than 30 hours without any contact with the aircraft, we believe that the family members should prepare themselves for the worst.