While flying a routine reconnaissance mission over Bosnia, fighter pilot Chris Burnett photographs something he wasn’t supposed to see and gets shot down behind enemy lines, where he must outrun an army led by a ruthless Serbian general. With time running out and a deadly tracker on his trail, Burnett’s commanding officer decides to risk his career and launch a renegade rescue mission to save his life.

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.