A specialist in covert operations, Robert McCall, he fakes his own death in order to live in peace the rest of life in Boston. Robert tries to redeem past sins by helping the most helpless members of society, and it comes across young prostitute Teri. To save his life, Robert will have to resort to methods that transformed him into a legend of its former agents. Its enemy number one? Russian Mafia and especially Teddy, a very brutal gangster ready to do anything to settle accounts with Teri.