In the Prohibition era town of Lawless, a young boy named Angelo Lagusa experiences a horrific tragedy when his family is murdered by the Vanetti mafia. Forced to abandon his old life, he reinvents himself as Avilio Bruno.
Years later, fueled by a burning desire for revenge, Avilio receives an anonymous letter that draws him back to Lawless. He orchestrates a plan to infiltrate the Vanetti family by befriending Nero, the don's son.
91 Days follows Avilio's dangerous and calculated quest for retribution as he navigates the treacherous world of organized crime, seeking to avenge his family's death.