New York City Detective John McClane has just arrived in Los Angeles to spend Christmas with his wife. Unfortunatly, it is not going to be a Merry Christmas for everyone. A group of terrorists, led by Hans Gruber is holding everyone in the Nakatomi Plaza building hostage. With no way of anyone getting in or out, it's up to McClane to stop them all.
Die Hard is based on Nothing Lasts Forever, the sequel to Thorp's 1966 novel The Detective, which itself had been adapted into a 1968 film of the same name starring Frank Sinatra.
Fox was contractually obligated to offer Sinatra the lead role in Die Hard, but he turned it down and the film was instead pitched as a sequel to the 1985 action film Commando starring Arnold Schwarzenegger. When Schwarzenegger also turned it down, the film was pitched to, and rejected by, a host of the era's action stars before Willis was chosen. The studio did not have faith in Willis' action star appeal, as at the time he was known for his comedic role on television.