In The Equalizer 4 (2024), Robert McCall (Denzel Washington) returns to protect vulnerable people from dark forces, but this time the threats come not only from the American underworld but also from across Europe. After trying to live a peaceful life in a small Italian town, Robert discovers that the town is controlled by a notorious international crime syndicate that threatens the safety of its residents.

When an old friend of Robert’s is mysteriously murdered, he has no choice but to turn to his skills to find the culprit. The search leads him to a vast conspiracy involving arms trafficking and the collusion of transnational criminal organizations. With the help of an undercover agent played by a young agent (played by Zendaya), Robert must overcome countless dangers, fight against ruthless mafia bosses to rescue the captured victims.