|Bruce Willis||John McClane|
|Jai Courtney||Jack McClane|
|Mary Elizabeth Winstead||Lucy McClane|
|Pasha D. Lychnikoff||Cabbie|
|April Grace||Sue Easton|
New York City cop John McClane arrives in Moscow to track down his estranged son, Jack . McClane thinks his son is a criminal, so it comes as a shock when he learns that Jack is actually working undercover to protect Komarov, a Russian government whistleblower. With their own lives on the line, McClane and Jack must overcome their differences in order to get Komarov to safety and thwart a potentially disastrous crime in the Chernobyl region.