Die Hard Quadrilogy

New York cop John McClane finds himself battling an assortment of terrorists in DIE HARD, DIE HARD 2, DIE HARD WITH A VENGENCE, and DIE HARD 4.0.
In DIE HARD, New York cop John McClane goes to Los Angeles on Christmas Eve to visit his estranged wife at her company's Christmas party, held on the top floor of a huge skyscraper. The building is invaded by terrorists, leaving the cop, who's escaped to the roof, as the other partygoers' only hope for survival.
In DIE HARD 2, Renegade commandos seize a major international airport to rescue a drug lord from justice. Detective McClane, there to meet his wife, must battle incompetent airport security, hard-headed, gung-ho anti-terrorist squads and a deadly winter snowstorm to break the terrorist's grip before his wife's plane runs out of fuel.
In DIE HARD WITH A VENGENCE, a psychotic terrorist targets New York city cop John McClane, who gets help from a civilian explosives expert.
In DIE HARD 4.0, John McClane is after a group of Internet-savvy terrorists who threaten the security of the United States and have kidnapped his daughter. However, McClane is helped along the way by an unassuming computer hacker he has just arrested.