Robert McCall, a former CIA agent turned vigilante, leads a quiet life in Boston while working as an Uber driver. However, his dark past and lethal skills are never far behind. The story unfolds when Susan Plummer, an old friend and colleague, is murdered in an apparent attack. With a broken heart and seeking justice, McCall dives back into the criminal world to uncover the truth behind this murder.
As he investigates, he confronts a web of betrayals and complicities that lead him to make unexpected allies and question the loyalty of those around him. In the midst of this search, McCall also becomes a father figure to a young artist in the community, providing guidance and support as they navigate the harsh realities of street life.
Tension escalates when it is revealed that Susan's murder is connected to his own past, forcing McCall to confront old enemies and make painful choices. The action never stops: each twist brings new fights and moments of intense adrenaline. But at the end of the day, how far will McCall go to protect those he loves and preserve his own morality while seeking redemption in a world filled with shadows? The answer lies in an explosive final battle that redefines his fate and that of those around him.