
Robyn McCall, an enigmatic woman with a mysterious background, uses her extensive skills to help those with nowhere else to turn; McCall comes across to most as an average single mom who is quietly raising her teenage daughter; but to a trusted few, she is "The Equalizer" -- an anonymous guardian angel and defender of the downtrodden, who's also dogged in her pursuit of personal redemption.

McCall receives a desperate plea for help, that leads her into a confrontation with Mason Quinn, an enemy from her past in intelligence; in need of confidential information, McCall forms a tentative alliance with a by-the-book CIA handler.

McCall's vigilante work further complicates her personal life when she is forced to ask her ex-husband, Dr. Miles Fulton, to help with a gunshot victim, one of two women being hunted by thieves after they witnessed a robbery.

When Aunt Vi is the lone juror on a murder trial who believes the defendant is innocent, McCall covertly investigates the case to find proof that Vi's instincts are correct.

A self-proclaimed psychic claims his missing sister is in imminent danger, according to his visions; Delilah struggles under the weight of keeping McCall's secrets.