The plot of the film is based on real events and tells about the life of the hit man Richard Kuklinsky, who has accounted for more than two hundred deaths. In 1964, the young man took the criminal path to ensure a decent life for his family. None of his circle could even imagine what this man was doing. For his wife, he was always a loving devoted husband, for his daughters an attentive father, and for friends and neighbors a wonderful family man. Fulfilling the instructions of the mafia, Richard became a true professional in his field and was considered one of the best. But all the secret will ever become apparent, and Richard will have to answer for everything that he has done ...