Law of Tehran is an Iranian crime thriller in which a policeman goes head-to-head with a drug dealer he is desperate to bring down. The city is brimming with drug addicts, many of whom are homeless. Samad, a member of Anti-Narcotics Police Task Force, is looking for a drug kingpin, Nasser Khakzad. After several operations, Samad manages to track him down at his penthouse. Nasser goes through legal steps that lead to his death penalty and execution, but along the way, Samad comes to realize that Nasser was drawn to this path because of broken down social conditions, imposed on him and questions whether all the arrests and executions in all these years, did not have any effect on society’s drug problems