Set in Lawless, Illinois, during Prohibition, where illicit liquor dominates the black market. Angelo Lagusa, a young man whose family was killed in a mafia dispute, seeks revenge against the Vanetti Family, specifically its don, Vincent Vanetti. Seven years after the murder, while in hiding, Angelo receives an anonymous letter from his father's friend, prompting him to return to Lawless to exact his revenge. Adopting the alias Avilio Bruno, he infiltrates the Vanetti Family by gradually befriending the don's son, Nero. However, in this dramatic 91-day narrative, revenge begets revenge, and killing may lead to drastic consequences. How will Angelo Lagusa and Nero Vanetti fare in this tragic field of harvest that they have only just begun to sow?