During the 1980s, a failed stand-up comedian is driven insane and turns to a life of crime and chaos in Gotham City while becoming an infamous psychopathic crime figure.
After a botched bank robbery lands his younger brother in prison, Connie Nikas embarks on a twisted odyssey through New York City's underworld to get his brother Nick out of jail.
After his six-year-old daughter is abducted, a desperate father takes justice into his own hands when he loses faith in the detective leading the investigation, setting both men on a collision course as the search descends into obsession and moral compromise.
When Lou Bloom, desperate for work, muscles into the world of L.A. crime journalism, he blurs the line between observer and participant to become the star of his own story. Aiding him in his effort is Nina, a TV-news veteran.
To take down South Boston's Irish Mafia, the police send in one of their own to infiltrate the underworld, not realizing the syndicate has done likewise. While an undercover cop curries favor with the mob kingpin, a career criminal rises through the police ranks. But both sides soon discover there's a mole among them.