John McClane is back and badder than ever, and this time he's working for Homeland Security. He calls on the services of a young hacker in his bid to stop a ring of Internet terrorists intent on taking control of America's computer infrastructure.
Assassin Robert Rath (Sylvester Stallone) arrives at a funeral to kill a prominent mobster, only to witness rival hired gun Miguel Bain (Antonio Banderas) complete the job for him -- with grisly results.
In the year 2035, convict James Cole (Bruce Willis) reluctantly volunteers to be sent back in time to discover the origin of a deadly virus that wiped out nearly all of the earth's population and forced the survivors into underground communities.
Marcus Burnett is a hen-pecked family man. Mike Lowry is a foot-loose and fancy free ladies' man. Both are Miami policemen, and both have 72 hours to reclaim a consignment of drugs stolen from under their station's nose.
Along with his new friends, a teenager who was arrested by the US Secret Service and banned from using a computer for writing a computer virus discovers a plot by a nefarious hacker, but they must use their computer skills to find the evidence while being pursued by the Secret Service and the evil computer genius behind the virus.
Aimlessly whiling away their days in the concrete environs of their dead-end suburbia, Vinz, Hubert, and Said -- a Jew, African, and an Arab -- give human faces to France's immigrant populations, their bristling resentment at their social marginalization slowly simmering until it reaches a climactic boiling point.