In the mid-1980s, New York is engulfed in a fierce battle against the Organized Mafia. Mafia soldier Jackie DiNorscio (Vin Diesel) and 19 of his associates find themselves in a drawn-out situation, patiently awaiting their federal racketeering trial that is set to unfold under The Racketeer Influenced and Corrupt Organizations Act (RICO). During this tense period, while out on bail, Jackie is brutally shot by his cousin, the drug-addicted Tony Compagna (Raúl Esparza). In a shocking incident, Tony enters Jackie's home and fires four bullets at him while he sleeps, but his frantic shooting proves to be ineffective, allowing Jackie to survive.
Once in the hospital, Jackie remains loyal and refuses to identify Tony to the authorities, insisting, “I never saw anything.” Meanwhile, driven by fear of retaliation from the expansive mob family led by Nick Calabrese (Alex Rocco), Tony compromises and chooses to testify against Jackie for district attorney Sean Kierney (Linus Roache). Soon after, Jackie faces arrest and is given a sentence ranging from 22 to 30 years in prison after being framed in an unrelated drug operation orchestrated by the DEA.
Kierney attempts to pressure Jackie into cooperating with the government, hoping to facilitate a quicker release, but Jackie stands stubbornly against this suggestion. Frustrated with the outcome of his previous trial, he decides to dismiss his lawyer who had already charged him a staggering $250,000 and violently engages in the legal battle alone. The trial features prominent mafia figures, including Carlo Mascarpone (Frank Pietrangolare), Gino Mascarpone (Paul Borghese), Danny Roma, Alessandro Tedeschi (Nick Puccio), Tino Bellochio, and others who are heavily involved in various criminal activities alongside Jackie.
As the case grows complex with twelve defendants battling their stakes, Judge Sidney Finestein (Ron Silver) strongly advises Jackie against defending himself. However, Ben Klandis (Peter Dinklage), the lead defense attorney, agrees to assist Jackie, recognizing his innate charm that might appeal to the jury. Over time, though, Jackie’s arrogant demeanor begins to irritate the courtroom collectively. Klandis believes in Jackie’s potential to amuse the jury, stating that “a laughing jury is not a hanging jury,” but the ongoing tensions escalate.
In retaliation for Jackie's conduct during the trial, Kierney orchestrates a series of punitive measures, revoking his prison privileges. Jackie's conditions worsens when his lounger is removed, crucial for his back issues, causing sleepless nights. Even Jackie's small victories, like gaining permission for lunch with fellow mobsters during court, incite jealousy and concern among his peers, particularly from Nick, who warns that Jackie could jeopardize their chances in court.
Months drag on as the court proceedings evolve into an exhausting marathon. Jackie confronts key FBI agents, disputing their claims and questioning their credibility, only to face fines for contempt. Meanwhile, Jackie seems to find common ground with Klandis, who worries that Jackie’s self-defense efforts might ultimately ruin their case.
As the trial reaches a boiling point, an undercover agent shares testimony about the mafia's dealings. Jackie capitalizes on the moments of doubt, cross-examining witnesses and strategically discrediting testimonies that lean against him, particularly from his cousin Tony. After an arduous 21 months of testimony, the conclusion seems imminent.
When it finally comes time for the jury to deliberate, no one expects that in just 14 hours, they would return with a not guilty verdict on all counts. While his fellow defendants are greeted by their families and freedom, Jackie is led back to prison to serve out the remnants of his sentence. Nevertheless, he receives a hero's welcome upon his return, as fellow inmates chant his name, recognizing his resilience.
As the film closes, we learn from title cards that the real-life Jackie DiNorscio served 17 and a half years in prison before his release in 2002, passing away from natural causes thereafter.
