Robert McCall (Denzel Washington) is a former Government intelligence agents. He retired from the unit by means of a faked his death and is living in Boston. McCall later dedicated itself to helping the weak and oppressed communities. Anyone who has a problem and can't solve it alone, they can contact McCall. So roughly that he write the ads in the newspaper.
Until one day he met and decided to help Teri (Chloe Moretz), a young girl who works as a prostitute. However, this is just bringing it into a big problem. He had to deal with a group of gangsters and Russia involves some CIA agent. Will McCall managed to overcome the problem and rescue the young girl is?