After serving a false rap to establish his wiseguy credentials, undercover FBI agent Vinnie Terranova infiltrates the criminal underground of Atlantic City, where he could wind up dead.

A grandstanding prosecutor's public intention to indict a major crime boss endangers Vinnie's cover and the OCB's plans.

A psychopathic murderer posing as Sonny's nephew double-crosses Sonny and holds Vinnie's girlfriend Gina hostage.

Vinnie risks blowing his cover by going to the police to investigate the death of his prizefighter cousin.

When the local police break up several of Sonny's secret deals, Vinnie must fabricate another informant.

Vinnie tries to avenge his mother's mugging but is devastated that she hasn't forgiven him for his "criminal" existence.