Days away from her wedding to Steve Austin, Jaime Sommers experiences a mysterious breakdown of her Bionic limbs. With her physical fate unknown, Jaime calls off the wedding. Her condition quickly deteriorates, and Dr. Rudy Wells races to find the cause behind the breakdown. Meanwhile, in the Bahamas, terrorist Miles Kendrick takes control of the American Embassy and threatens the launch of a nuclear missile. Steve and OSI operative Kimberly Harmon head to the Bahamas to stop Kendrick, but in the midst of the mission Steve is suddenly stricken with the same computer virus that is destroying Jaime.

Off-duty cop John McClane is gripped with a feeling of déjà vu when, on a snowy Christmas Eve in the nation’s capital, terrorists seize a major international airport, holding thousands of holiday travelers hostage. Renegade military commandos led by a murderous rogue officer plot to rescue a drug lord from justice and are prepared for every contingency except one: McClane’s smart-mouthed heroics.