From IMDB:

John McClane travels to Russia to help out his seemingly wayward son, Jack, only to discover that Jack is a CIA operative working to prevent a nuclear-weapons heist, causing the father and son to team up against underworld forces.

What can I say? You will see the usual car chase mayhem. Possibly the father and son theme adds a little (very little) something.

Jai Courtney, who plays the son Jack, played Varro in “Spartacus: Blood and Sand”.

There are at least two plot twists as a reward for actually sitting through this B film.