Plot

Bob Saginowski finds himself at the center of a robbery gone awry and entwined in an investigation that digs deeply into the neighborhood's past where friends, families, and foes all work together to make a living--no matter the cost.

Follows lonely bartender Bob Saginowski through a covert scheme of funneling cash to local gangsters--"money drops"--in the underworld of Brooklyn bars. Under the heavy hand of his employer and cousin Marv, Bob finds himself at the center of a robbery gone awry and entwined in an investigation that digs deeply into the neighborhood's past where friends, families, and foes all work together to make a living--no matter the cost.—Polly_Kat

Marv (James Gandolfini) and Bob (Tom Hardy) run a bar in New York. The bar is owned by a Chechen criminal gang who use it for payment drop-offs ("the drop"). One night the bar is robbed, the robbers knew that to not take "the drop" money. The Chechens aren't happy and demand that Marv and Bob get back their money.—grantss

Bob Saginowski (Tom Hardy) is a bartender at a neighborhood bar in Brooklyn called "Cousin Marv's". Marv (James Gandolfini) ceded ownership of the bar years earlier to Chechen mobsters and now operates it with Bob as a 'drop' for illegal takings. Marv berates Bob and some patrons for commemorating the 10th anniversary of the murder of a man named Richie Whelan. Later at night, Nadia (Noomi Rapace), discovers Bob rescuing a battered pit bull abandoned in her garbage can. She assists Bob in caring for the dog. Bob leaves the dog in her care until he can decide whether to adopt him.

On another night, the bar is robbed by two masked gunmen. During the robbery, Bob notices that one of the gunmen is wearing a broken watch. Detective Torres (John Ortiz), who attends the same church frequented by Bob, shows up to investigate the aftermath. Marv is infuriated at Bob for informing Torres about the watch, providing the police an early lead on the culprits. The next day, Chovka, the face of the Chechen mob, shows up to question Marv and Bob about the robbery, asking the two of them whether or not they know one of the robbers impaled in the back of a van. He demands to know why the cops know about the broken watch and warns Marv he must retrieve the money. It is later revealed that Marv orchestrated the robbery by meeting with one of the perpetrators.

Bob eventually agrees to adopt the dog and names him Rocco, all the while bonding with Nadia, who agrees to care for him whenever Bob tends to the bar. While walking Rocco in a park, a passer-by, Eric Deeds (Matthias Schoenaerts) comments to Bob that Rocco is a nice-looking dog.

Meanwhile, Marv's sister Dottie (Ann Dowd) informs Marv that a collection agency has been calling to settle their father's life support bills. She suggests that they should take him off life support, to which Marv disagrees. On his way into the bar, Marv begins to suspect he is being followed after providing directions to a stranger. Deeds appears at Bob's house and provides proof at the admission that he is the actual owner of Rocco and was responsible for beating and abandoning him. After demanding Rocco is returned, Deeds takes Bob's umbrella and leaves.

Later at the back of the bar, Bob and Marv discover a bag containing a severed arm with a broken watch together with the money. Bob disposes of the arm with an aloofness noticed by Marv. Shortly after, Bob is unnerved when Deeds appears in the bar and reveals he knows Nadia. Marv informs Bob that Deeds is a local thug who claims to have killed Richie Whelan. Bob confronts Nadia and asks her how well she knows Deeds, though Nadia is offended by the question and leaves. Bob and Marv return the money to the Chechens, who in turn inform them that the bar will be the drop bar for the night of the Super Bowl.

Bob returns home to find Nadia waiting. Upon explaining that she and Deeds used to date, Bob accepts that Nadia was hiding the reason for her scars on her neck, and they reconcile. Marv meets the other robber and, while driving, informs him of a plan to rob the bar again during the night of the Super Bowl. However, disturbed by the death of his partner, the robber refuses to take part and exits the car. Marv runs him over and kills him.

After walking Nadia to her home at night, Bob returns to his own home and discovers his umbrella, implying that Deeds was present. Marv later meets with Deeds to recruit him to rob the bar after the Super Bowl. Bob later confronts Deeds; the latter threatens to tell the police that Bob stole and beat Rocco unless Bob pays him $10,000. He warns Bob that Rocco will likely be killed if he is returned.

Later, Marv informs Bob that he will be calling off sick on the day of the Super Bowl. Bob is suspicious Marv would miss out on the large number tips gained during a Super Bowl night and asks him if he is planning on doing something that they cannot clean up this time. On the Super Bowl night and with Rocco in tow, Bob takes $10,000 hidden in his basement and hides it behind the bar counter together with a pistol. Elsewhere, Deeds breaks into Nadia's home and forces her to go to the bar with him.

Marv warns Deeds that Bob is not what he seems. Marv lines his trunk with plastic and heads to the bar, parking and waiting nearby. Various mobsters drop off money throughout the night. Eventually the bar clears except for Deeds and Nadia. Nadia warns Bob that Deeds is armed. Deeds refuses Bob's offer of $10,000 as payment for adopting Rocco and threatens to kill Nadia if he does not open the safe during a 90 second window at 2AM. While they wait, Bob narrates the story of Richie Whelan. Marv used to be a loan shark and Richie owed him a significant amount of money, but he won a casino jackpot and was able to pay Marv back. In order to cover Marv's own debts and prevent anyone knowing he was paid back, Bob murdered Richie and disposed of the body, not Deeds. Bob then fatally shoots Deeds and tells a frightened Nadia that it is safe to leave.

Later in the night, Bob is sat at the bar with Rocco while the Chechens dispose of Deeds' body and collect the money from the drop. Chovka informs Bob he was aware of Marv's deceit and negotiated a deal with him that he would buy him a ticket to a safe place. Meanwhile, the stranger Marv suspected of following him earlier executes Marv in his car at point blank range. Chovka accepts Bob played no part in the attempted robbery and provides him ownership of the bar as a reward.

On another day, Detective Torres visits the bar to question Bob about the disappearance of Deeds. Torres tells Bob that Deeds was in a psychiatric ward at the time of Richie Whelan's death. Torres implies that he knows Bob is responsible for the disappearance of Deeds as well as Whelan. Bob visits Nadia's home with Rocco and tells her that he knows she may not want to see him again but, if so, he wants her to tell him so and then he'll leave her alone. However, Nadia offers to take a walk with him and Rocco.