Robert McCall is a former agent of a shadowy, unnamed government agency, who is trying to make up for the unspoken sins of his past. His atonement comes in the form of an advertisement in a New York newspaper that features the quote: "Got a problem? Odds against you? Call the Equalizer." McCall uses his finely honed skills and occasionally the agents and resources from his old agency to combat the injustices perpetrated against those who can't seek protection from the law.
While McCall is testifying in Washington, Scott tries his hand and looks for thugs harassing a local merchant.
Control's goddaughter is threatened with the death of her father, a Canadian agent, unless she can reveal his informant. Then with little time left, McCall tells Kostmayer of his personal reasons for wanting to save Yvette and her father.
Scott discovers that his father has been kidnapped by someone, and following his father's instructions, contacts an old Company colleague, Richard Dyson, who sets things in motion to find out who has McCall and to get him back.
McCall helps a former showgirl convinced someone is stalking her and a boy whose father helped steal antiques now wanted by two separate parties.
Nightmares become a reality for an invalid woman when a threatening figures from her dreams appears in her room.
The trading on Wall Street gets a little rough; McCall and Mickey pull a half-drowned woman from the river after she gets in the way of some ruthless manipulators.
A young girl runs away from her quarreling parents and into the hands of a child pornographer.
Father and son protect a girl from would-be rapists intent on killing the only witness to a murder.
Scott discovers that his father has been kidnapped by someone, and following his father's instructions, contacts an old Company colleague, Richard Dyson, who sets things in motion to find out who has McCall and to get him back.
A career woman wants McCall's aid in ending her son's fascination with a charismatic drug dealer.
A construction worker becomes both witness and target when she sees a murder and is spotted by the killer.
McCall asks Harley to help him handle a request for help from a six-year-old AIDS victim who is living with his grandmother and facing increasingly violent harassment from the frightened and angry neighbors.
A former government agent offers his services to people facing problems too big for them to handle, such as a woman being stalked by a psychopath and a man who learns of a blackmail scheme involving government officials.
McCall is torn between a lovely psychiatrist and a man who calls and says he can't stop himself from murdering women.
McCall gets involved romantically and professionally with a woman wanted in Pennsylvania for killing a cop.
McCall and a former terrorist, now a monk, are both searching for the monk's former partner, a terrorist who uses plastic surgery after each assignment to keep ahead of his enemies.
McCall helps a young boy whose father was tricked into committing a crime.
Muggers seek revenge on a student who injured one of them while escaping, and a vigilante killer pins McCall's ad to his victims.
McCall and Kostmayer are caught with an acting company rehearsing a new work when a psychopath boobytraps the theater exits with bombs.
Control becomes McCall's client when a KGB agent who infiltrated a think tank is murdered.
The aide to an ambitious candidate for state senator discovers that her boss is blackmailing the incumbent into endorsing his candidacy.
A bitter man tries to get revenge on the men who brutalized his wife but he calls McCall when someone else gets them first.
The odds are against McCall when he's framed for the murder of a blind man.