John McClane, the heroic New York cop with a knack for being in the wrong place at the right time, is back, and his latest predicament takes him all the way to Russia to track down his estranged son, Jack, who has been imprisoned in Moscow. But the mission takes a deadly turn as father and son must join forces to thwart a nuclear weapons heist that could trigger World War III.

In post-Soviet Russia, nothing is as it seems. When members of the Russian Mafia pose as KGB agents to steal a nuclear missile, the CIA calls on martial arts master Jackie Chan to stop them. Jackie treks the globe--from the icy glaciers of the Ukraine to the pristine beaches of Australia--traveling by submarines, stilts and snowboards, encountering man-eating sharks and heartstopping beauties.