Executioner is the story of DPO Jonathan (Segun Arinze) whose son Kingsley (Joseph Momodu) is a notorious armed robber. His identity has long been a tough nut to crack for inspector Mustapha (Seun Akindele) and his team of policemen. Cynthia (Lota Chukwu) an intelligence officer, however, got to know of the secret and shared same with the DPO disguised as an old woman. This revelation thus prompts the DPO to makes moves to save his son from the hands of the law.