Robert McCall (Denzel Washington),
a former covert operations officer, volunteers his services as a private eye to people in need in an attempt to atone for a dark past.
He meets and forms a relationship with Teri (ChloŽ Grace Moretz), a teenage prostitute who needs his help. However, as a result, he finds himself embroiled with the Russian mob.
Based on the 1980s TV series of the same name.