When someone orders a pizza, Elmo the pizza man uncovers a government conspiracy and will stop at nothing to get his $15.23

Robert McCall is a former agent of a secret government agency who is now running his own private crime fighting operation where he fashions himself as "The Equalizer." It is a service for victims of the system who have exhausted all possible means of seeking justice and have nowhere to go. McCall promises to even out the odds for them.