Simple, average inhabitant of America Robert McColl is the main hero of the tightly-plotted film "The Equalizer". He lives a quiet life, he worked as a salesman in a large building hypermarkets and in the evenings reading books of the great classics of world literature, and sometimes peeps into small bar near the house. There he quite often communicates with the young prostitute Teri whom gives quite good advice for own life improvement, but the girl is practically the slave for very bad guys. Robert knows long ago in what dangerous and cruel world he lives therefore and never got involved in alterations. But when his friends are in danger, then ice cold can be seen in the view of Robert, which is inherent to the hired killers or people who was in the hell. Very few people from Robert's acquaintances know that his past really conceals not the most pleasant memories.