Mafia! unfolds with a deliberately nonlinear, flashback-driven narrative that weaves together Tony’s present-day peril with the long arc of his family’s rise and fall. The film opens with Tony, the son of a powerful Mafia don, Vincenzo Armani Windbreaker Cortino, stepping away from a Las Vegas casino and delivering a chilling voiceover about his philosophy of life. As he starts the car, it explodes in a brutal, sudden burst that sets the tone for a story about shattered loyalties and fractured dreams.
The tale then rewinds more than fifty years to reveal Vincenzo’s boyhood in Italy, where he is the awkward son of a Sicilian postman. A chance delivery goes wrong when a parcel hides a mysterious white powder, and the delivery boy’s fate becomes the catalyst for a life-changing turn. The recipient, convinced the boy knows too much, pursues Vincenzo to a street fair, where Vincenzo’s world changes forever as the killer destroys Vincenzo’s father. The boy escapes to America, where he endures poverty, hardship, and the slow construction of a destiny that will place him at the head of a mafia empire.
The film then shifts to more recent events: Tony has just returned from the Korean War and accompanies his idealistic Protestant girlfriend, Diane, to meet his family at his big brother Joey’s wedding reception, a playful parody of a moment from The Godfather. The celebration is interrupted by a brutal reality as Vincenzo survives a nearly fatal gun attack—47 bullets intended to end his life. Tony vows to strike back against Gorgoni, a drug lord Vincenzo had refused to work with, while Diane confronts Tony with the cost of his violent world and his allegiance to his family. After avenging the assault, Tony hides in Las Vegas, where Cesar Marzoni invites him to manage his casino, The Peppermill. The arrangement brings Tony professional success but also introduces a dangerous distraction in Pepper Gianini, a femme fatale planted by Marzoni to erode Tony’s focus and widen the rift between Tony and Joey.
Meanwhile, Vincenzo survives the attack and travels to Las Vegas to publicly name Tony as his successor. Joey, who feels snubbed by this choice, is told that his future lies elsewhere—“You get Wisconsin.” Back home, Vincenzo returns only to be felled by a shocking betrayal: his 5-year-old grandson, Chucky, assassinates him by spraying him with malathion, a macabre parody of a famous death moment in a rival film. The present thread catches up with Tony after he discovers Joey and Pepper in a compromising hotel room and walks away in disgust—yet his own car explodes in another fatal echo of the opening.
The story returns to the wounded Tony, who is horribly disfigured and attends his father’s funeral from a wheelchair, where he notices the killers during a quiet moment—through the eyes of little Chucky taking a payoff from a rival Don. Rather than rushing to vengeance, Tony resolves to rebuild his life, win back Diane’s love, and set his affairs in order. Diane has already ascended to a position of immense power, becoming President of the United States and threatening world disarmament just as Tony begins his pursuit of her again. He convinces her to postpone world peace long enough to marry, and the film culminates in a brutal, almost operatic act of justice: a grand slaughter that mirrors the classic Godfather finale, aided by Vincenzo’s mother Sophia and Nick “The Eskimo” Molinaro, culminating in a shocking symbolic moment that closes the cycle of revenge and power in a stark, unforgettable manner.