Al Capone moves back to Chicago and takes over two floors of the city's finest hotel, the Lexington. With a thriving business and Chicago politicians in his back pocket, Capone soon reaches a level of celebrity normally reserved for athletes and entertainers. As Capone's profile grows, he begins to indulge in all that the Roaring '20s have to offer, including cocaine. While Capone enjoys his reign at the top of the Chicago underworld, Irish gangster Bugs Moran seeks to take him down as revenge for the deaths of his partners Dean O'Banion and Hymie Weiss. On March 7, 1928, Moran orders a hit on one of Capone's top associates, Jack McGurn, the man who took out Hymie Weiss. McGurn survives but Capone decides to retaliate by taking out Moran and as many of his men as possible - all at once. On February 14, 1929, Capone's men dress as law enforcement and raid the liquor buy. They order Moran's men to face the wall for handcuffing, but while their backs are turned, Capone's men shoot all of them. Firing 70 rounds of ammunition in less than 10 seconds, the assassins carry out the biggest gangland hit in American history that will come to be known as the St. Valentine's Day Massacre. Through a stroke of luck, Moran avoids the massacre, but knows he's been defeated.

After becoming the most powerful mob boss in the country, Al Capone now finds himself locked up in America's newest and harshest maximum security prison: Alcatraz. Prohibition has recently been repealed and one of the Outfit's most important sources of income dries up. With Capone cut off from all communication, his most trusted men, Frank Nitti, Tony Accardo and Paul Ricca, must keep his organization from collapsing. With Americans flocking to theaters by the thousands, the movie business is raking in millions of dollars a month. To take advantage of Hollywood, Nitti recruits Willy Bioff. Acardo breaks into a new racket in Chicago: slot machines. With help from Ricca, Accardo builds a network of slots in Chicago bars, earning up to $20,000 a year. By the end of 1939, the Outfit is bringing in more money than ever before... But new problems start to appear.

Tony Accardo have taken the reins of the criminal empire built by their mentor Al Capone. Thanks to Sam Giancana's takeover of the policy racket, the gangsters are now making millions. With so much money coming in, Accardo knows they need a place to hide it. They find their answer in a growing city where gambling is now legal: Las Vegas. However, the New York mafia is already there, led by criminal mastermind Meyer Lansky.

In less than two years, Al Capone has risen from a humble bookkeeper to second-in-command of Johnny Torrio's criminal empire in Chicago. The empire is worth the modern-day equivalent of $35 million. Capone purchases a home for his family and moves them from New York to Chicago. Torrio and Capone expand their empire from Chicago's South Side to the North Side, which is controlled by Chicago's second largest gang, the Irish. Violence erupts as ruthless Irish gang leader Dean O'Banion protects his territory and bootlegging business from Torrio and Capone.

Dive into the gripping world of organized crime with the enthralling documentary series focusing on John Gotti, a name synonymous with the Gambino crime family. In this second installment, viewers are transported into the shadowy corners of mob life, exploring the brutal enforcement of mafia rules and the dire consequences of betrayal. Highlighting a chilling assignment carried out in Florida, the documentary captures the ruthlessness embedded within the mafia's code, where personal lives intertwine dangerously with business, leading to violent outcomes.
The episode also provides a fascinating look into the pivotal legal battles that defined Gotti's reign as a mafia boss. Witness the intense courtroom drama involving Diane Giacalone, the tenacious assistant U.S. Attorney, who took on Gotti and his associates in a high-stakes trial. Despite her efforts, the complexities of prosecuting organized crime come to the forefront, showcasing the challenges faced by law enforcement in penetrating the secretive and loyal underworld. This documentary is a must-watch for those intrigued by true crime and the intricate dance of cunning and law that shapes the world of organized crime.

The last installment of the series features a revealing first-person account that delves into the complexities of Gotti's mentorship and the stark realities of gang life. From a determined youth facing rejection from his father to his bold declaration to work for Gotti, witness the tumultuous ascent of Sammy ‘The Bull’ Gravano within the criminal underworld.
The narrative captures a pivotal confrontation, where Gotti chillingly outlines the dark path ahead, juxtaposed against the awe-inspiring backdrop of the Justice Department in Washington D.C., a symbol of the relentless pursuit that future gangsters will inevitably face. This episode doesn’t just recount events; it places you at the heart of an ongoing battle against organized crime, providing an intimate look at Gotti’s life, from his rise to power to his ultimate indictment and the intense legal battles that followed. Dive into a gripping exploration of loyalty, power, and the consequences of a life in the mafia.