Earlier today, 'Boardwalk Empire' fans were treated to our best look inside season 4 to date via a brand-new trailer, teasing the action and new characters populating at least four different locations. Good things come in fours, it seems as HBO has gone even further to reveal episode synopsis of the first four weeks, as well as an overview of the new season premiering on Sunday, September 8!

Keep in mind that HBO's descriptions of the first four episodes come at a spoilery price, one which may remove a bit of the mystery over the new threat to Nucky's empire. Proceed with caution, and gaze into the most spoiler-filled look at 'Boardwalk Empire' season 4 yet:

Atlantic City, February 1924: After barely surviving an overthrow by gangster Gyp Rossetti, Nucky Thompson is laying low at the end of the Boardwalk. But the calm will be short-lived, as Nucky faces new challenges, including a clash with the mayor, a battle with his brother Eli over Eli’s college-age son, and the irresistible lure of lucrative – and perilous – opportunities in Florida.

Episode #37: “New York Sour”

Following his battle with Gyp Rosetti, Nucky makes a peace offering to Joe Masseria (Ivo Nandi) while working the odds with Arnold Rothstein. While Chalky is busy running the Onyx Club on the Boardwalk, the impulsive Dunn Purnsley (Erik LaRay Harvey) clashes with a booking agent. Fresh-faced Federal Agent Warren Knox arrives in Atlantic City to learn the ropes from Agent Sawicki (Joseph Aniska). Gillian seeks custody of her grandson, Tommy (Brady Noon), while trying to find a “good” man to keep the Artemis Club afloat. Eli’s college-age son, Willie (Ben Rosenfield), turns to Nucky for career advice. Al Capone enlists his brothers, Frank and Ralph, to help him expand his business in the Chicago suburb of Cicero. Richard Harrow returns to his violent ways.

Episode #38: “Resignation”

Now working as a “delivery man” for Dean O’Banion (Arron Shiver), Van Alden is ordered to keep tabs on Al Capone, joining the ascendant mobster to help keep Cicero voters “informed” at a political rally. Dr. Valentin Narcisse arrives in Atlantic City, clashing with Chalky and Nucky over the loss of an employee. In Washington, Agent Knox aligns himself with J. Edgar Hoover (Eric Ladin), acting director of the Bureau of Investigation. Harrow fails to finish a job in Milwaukee, while Eddie demands a promotion after 11 years of service. With a business opportunity on the horizon, Nucky departs for Florida.

Episode #39: “Acres of Diamonds”

Nucky has reservations about investing in a Tampa land deal engineered by transplanted bootlegger Bill McCoy (Pearce Bunting). While there, he meets speakeasy owner Sally Wheet. Valentin Narcisse books a sexy jazz singer, Daughter Maitland (Margot Bingham), to perform at the Onyx, and gauges Dunn Purnsley’s allegiance to Chalky. Willie, Eli’s son, turns to Mickey Doyle and his bootleg warehouse to elevate his social standing at college. Gillian agrees to pose as Roy Phillips’ wife to impress a possible partner. Harrow tries to bury his past, though not before taking care of some unfinished business with Emma (Katherine Waterston).

Episode #40: “All In”

Nucky gets to know Arnold Rothstein over a card game, and sizes up an unexpected partner for his Tampa land deal. A newly promoted Eddie Kessler gets detoured after making a train-station delivery. When one of their collectors is incapacitated, Al and Frank Capone decide to finish his route, enlisting a reluctant Van Alden to tag along. Agent Knox fills Hoover in on the Thompson operation, vowing to exploit Nucky's weakest link. Chalky is intrigued by Daughter Maitland’s presence. Dunn Purnsley goes to Harlem, and is courted by Valentin Narcisse. Willie and his college roommate, Clayton (Owen Campbell), carry a practical joke too far.

The new season has added Patricia Arquette as Tampa speakeasy owner Sally Wheet, ‘The Killing‘ star Eric Ladin as a young J. Edgar Hoover, ‘The Hunger Games: Catching Fire‘ star Jeffrey Wright as educated Harlem leader Dr. Valentin Narcisse, ‘True Blood‘ star Brian Geraghty as  Federal Agent Warren Knox, Ron Livingston as Roy Phillips, a business and romantic prospect of Gillian’s, and HBO vet Domenick Lombardozzi as Chicago mobster Ralph Capone, elder brother to Al Capone (Stephen Graham).

Not spoiled enough? Check out the season 4 trailer for 'Boardwalk Empire' once more, and tell us if you'll be be ready for HBO to pour out the September 8 premiere!

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