Bruce Willis returns as John McClane, an off-duty cop who is the wrong guy in the wrong place at the wrong time. On a snowy Christmas Eve, as he waits for his wife's plane to land at Washington Dulles International Airport, terrorists take over the air traffic control system. It's now up to McClane to take on the terrorists, while coping with an inept airport police chief, an uncooperative anti-terrorist squad and the life of his wife and everyone else trapped in planes circling overhead.