Former special forces soldier Robert McCall from the action-packed crime thriller The Great Equalizer 3 has long been nurturing the idea of resignation and decides to end his turbulent existence, leaving this mission for younger and more zealous guys. After that, he is no longer going to take up arms and save an ungrateful world, and conceited people who are ruthless even to close relatives. But meeting a young prostitute. He forgets about the word itself and saves the girl, running into huge troubles associated with influential criminal people. The bandits beat and take away the girl, McCall, not having time to react, follows the kidnappers and faces all the severity of the Russian mafia, backed up by influential corrupt people from the CIA. Robert restores justice, after which the key figures of the mafia announce a hunt for a commando who dared to interfere in their peaceful life.
The only punishment - insomnia, is replaced by the transience of dangerous moments. The life of a former operative who peacefully reads fascinating novels in retirement is changing rapidly, overwhelming the guy with chases with gunfights and a sudden love for a corrupt beauty. The heart prefers new dangerous episodes, pushing the peaceful, quickly boring calmness to the backyard, so Robert returns to operational work again, challenging the underworld. The rotten cynical world again envelops McCall with its cruelty, involving him in a series of difficult life circumstances due to the protection of people in need.