Chris Potamitis lives with his parents and younger sister in the Bronx in the early 1980s. His immigrant father is fired from his job after 10 years of cleaning a shady Greek social club. Chris fails to get into the police academy because of a previous marijuana conviction. He gets a low-paying job as a security guard with the Empire Armored Car Company, where security is extremely poor, morale is equally bad, and no reliable records are kept of money collected or stored. His partner is killed during a robbery, but the company gives the dead man’s family only $5,000 in compensation rather than the $100,000 they are entitled to. After Chris is demoted to the position of night watchman, he steals one of the money bags he is guarding and gives some of the cash to his partner’s widow.
Chris makes the mistake of showing the money to his loud-mouthed best friend Eddie and telling him about the company’s worse-than-lax security. Eddie shares this information with Spiro, a gangster he wants to impress, and Spiro stages a robbery that is foiled by James Ransome, a veteran detective in the New York Police Department who has been tipped off. A gun battle ensues in which two of the robbers are killed. Then, on December 12, 1982, Eddie breaks into the company through the roof in the middle of the night, and he hectors a weak-willed Chris into opening the vault. Eddie knocks out Chris and steals $11 million in cash, the single largest cash robbery in U.S. history, exceeding the $5.8 million Lufthansa heist in December 1978. Eddie gives $3 million of the loot to Chris.