Teddy Walker is a successful salesman whose life takes an unexpected turn when he accidentally blows up his place of employment. Forced to attend night school to get his GED, Teddy soon finds himself dealing with a group of misfit students, his former high school nemesis and a feisty teacher who doesn't think he's too bright.
Iconoclastic, take-no-prisoners cop John McClane, finds himself for the first time on foreign soil after traveling to Moscow to help his wayward son Jack - unaware that Jack is really a highly-trained CIA operative out to stop a nuclear weapons heist. With the Russian underworld in pursuit, and battling a countdown to war, the two McClanes discover that their opposing methods make them unstoppable heroes.