Robert McCall (Denzel Washington) is a retired black ops operative who quietly lives in Boston, Massachusetts, works at a Home Mart hardware store, where he befriends many of his co-workers, and helps a security guard trainee named Ralphie pass his qualification exam. McCall promised his recently deceased wife that he would leave his old life behind. Unable to sleep, McCall spends some late nights reading in a 24/7 diner, where he befriends Alina (Chloë Grace Moretz), a teenaged prostitute for the Russian Mafia, who is regaled by Robert with his philosophical interpretations of the books he reads. One night she is hospitalized when brutally beaten by her pimp, Slavi (David Meunier). McCall enters a restaurant owned by the Russian mob and offers to buy Alina's freedom from Slavi for $9,800, but Slavi refuses, dismissing McCall as old and impotent. Failing in this approach, McCall kills Slavi and four of his men with skillful close combat efficiency.
Nick Tortano is an associate of local caporegime Sal Vitaglia. Nick wants to become a made man but has yet to be trusted enough for his first contract killing. As the Boston crime families wither, however, Sal is forced to consolidate his power and advance more men. Recognizing Nick as potentially useful soldier, Sal advises him to show more loyalty and respect to the family. Sal forces him to deliver an apology in order to smooth over relations with another gangster, Tony Matazano, whom he has insulted. Nick reluctantly delivers the apology, though his friend George, a local thug unaffiliated with the mafia, ridicules him for having to show respect to what he views as a contemptible person. Although Tony accepts Nick's apology, tensions remain high between them.
Narrating the trials of gangster James 'Whitey' Bulger, using the legal proceedings as a springboard to explore allegations of corruption within the highest levels of law enforcement.
Mafia boss Giovanni Manzoni (Robert De Niro), who has somehow offended Don Luchese (Stan Carp), a rival mafia boss, survives an attempted hit on him and his family at a barbecue. He snitches on Luchese, which sends Luchese to prison; Manzoni and his family enter an FBI witness protection program under the supervision of Agent Robert Stansfield (Tommy Lee Jones), and are relocated to a small town in Normandy.
The opening screen says: "Some of this actually happened."
In 1978, con artists Irving Rosenfeld (Christian Bale) and Sydney Prosser (Amy Adams) have started a relationship and are working together. Sydney has improved Rosenfeld's scams, posing as English aristocrat "Lady Edith Greensly". Irving loves Sydney, though is hesitant to leave his unstable and histrionic wife Rosalyn (Jennifer Lawrence), fearing he will lose contact with her son Danny, whom Irving has adopted. Rosalyn has also threatened to report Irving to the police if he leaves her.
Dave Lizewski (Aaron Taylor-Johnson), bored after having retired from fighting crime as Kick-Ass, begins training with Hit-Girl Mindy Macready (Chloë Grace Moretz) to become a proper hero. After accidentally killing his mother, Chris D'Amico (Christopher Mintz-Plasse) is now in control of his father's criminal empire and reinvents himself as supervillain The Motherfucker, swearing vengeance on Kick-Ass.
En Sicile, le parrain de Salvo (Saleh Bakri), un tueur à gages au service de la mafia, échappe à un guet-apens meurtrier. Salvo se rend dans la maison du commanditaire pour l'assassiner. Là, vit seule et recluse, Rita (Sara Serraiocco), une jeune femme frappée de cécité et qui n'est autre que la sœur de l'homme à abattre. La mission de Salvo prend alors une autre tournure…
Le film raconte de façon tragicomique la vie d'Arturo, qui depuis ses plus jeunes années, croise la route de la mafia. C'est un enfant particulièrement sensible aux bizarreries qu'il voit survenir tous les jours dans sa ville. Il subit le destin de tous les jeunes journalistes et militants qui ont affronté la vérité en face et qui, trop souvent, deviennent des victimes de la mafia .
At the funeral of his son Marko and associates in Tropojë, Albanian mafia head Murad Hoxha vows to seek vengeance on his son's killer. Traveling to Paris with his men, he interrogates and tortures former intelligence agent Jean-Claude Pitrel, whose business card was found at the scene of Marko's death, but finds no information. He then bribes a corrupt police official for Pitrel's files and deduces that his old friend Bryan Mills was responsible and is in Istanbul.
The film opens with Indonesian SWAT officer Rama praying, practicing silat and bidding goodbye to his wife, who is pregnant with his child. Rama joins a 20-man elite police squad, including Officer Bowo, Sergeant Jaka, and Lieutenant Wahyu, for a raid on an apartment block in Jakarta's slums. The team intends to capture crime lord Tama Riyadi, who owns the block and lets criminals around the city rent rooms under his protection. Arriving undetected, the team sweeps the first floors and subdues various criminal tenants; they also temporarily detain an innocent tenant delivering medicine to his sick wife. Continuing undetected to the sixth floor, the team is spotted by a young lookout, who passes the message to another guy to raise the alarm before he is shot and killed by Wahyu.
In the fall of 2008, amidst both the American financial crisis and the presidential election campaign, a man named Johnny "Squirrel" Amato (Vincent Curatola) plans to rob an illegitimate poker game. He enlists Frankie (Scoot McNairy), a former business associate, and Russell (Ben Mendelsohn), a heroin addicted Australian expatriate who is stealing purebred dogs for money, to perform the robbery. Markie Trattman (Ray Liotta), the proprietor of a poker ring, is revealed to have previously orchestrated an inside job by paying two men to rob his own illegal poker room. He holds up under rough questioning by the hitman Dillon (Sam Shepard), though later he openly admits his involvement to various criminal figures and suffers no retaliation. Squirrel anticipates that the Mafia will automatically blame Markie for the heist.