A Navy navigator is shot down over enemy territory and is ruthlessly pursued by a secret police enforcer and the opposing troops. Meanwhile his commanding officer goes against orders in an attempt to rescue him.
Coming together to solve a series of murders in New York City are a police detective whose family was slain as part of a conspiracy and an assassin out to avenge her sister's death. The duo will be hunted by the police, the mob, and a ruthless corporation.
John McClane travels to Russia to help out his seemingly wayward son, Jack, only to discover that Jack is a CIA operative working undercover, causing the father and son to team up against underworld forces.