When Hudson and Samantha Reed, two associates and figures from McCall's past ask for help on a case, demonstrating their own special abilities and knowledge, while, unbeknownst to them, a bigger conspiracy is at play.
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.