John McClane decides to visit his wife Holly in Nakatomi Plaza, only to discover that she is taken hostage on the 30th floor, along with a number of other hostages.[1][2] The terrorist leader, Hans Gruber, is after the money locked away in a safe on the 30th floor. His hacker, Theo, is slowly breaking the locks into the vault. McClane decides to fight the terrorists on his own, ascending the building as he does so.