An undercover agent infiltrates a gang with help from the leader's straight and narrow brother. 

SYNOPSIS:

ONCE UPON A GANG

Brody Keen is a violent gangster who leads a gang he is attached to his equally crooked mother Nancy Keen, trailed by the cops until they are finally connected to a bank robbery. Brody finds a way to get a reduced sentence by claiming he was working for another gangster only known as Mr. Big. However, Detective Jake Morgan is suspicious that Brody knows more than what he is saying, and the FBI led by Agent Harold Conover also agrees and decides to send in undercover Agent Mike Farmer to infiltrate. Conover and Farmer learn that Brody has an estranged younger brother name Tony Keen who turned his back on the gang and crime and became an entertainer and is now married to his fellow entertainer Esmerelda Perez, as a result his mother even turned her back on him.

Using the name Sam Alders Mike infiltrates the gang while Nancy tries to get Tony to work with them again. Mike’s only contact is his wife, Sarah Farmer. One night Brody escapes when he learns his mother is endanger only to learn Nancy planned it all to help motivate Brody to escape, however he decides to force his brother Tony into help them; kidnapping Esmerelda they force Tony to go along, during a planned heist Brody revels there is no Mr. Big and Brody made it up to give himself leniency.

During the robbery Tony and Esmerelda learn that “Sam” is an undercover FBI agent, and help him, but during the heist a criminal recognizes “Sam” as Mike Farmer of the FBI, and the cops and Feds arrive, enduring a shootout Esmerelda sells out Nancy to the Feds, while Tony and Brody fight and Tony gets away and reunites with Esmerelda and Brody is killed along with his mother.

After a long court case, Tony and Esmerelda return to their entertainment business, and Mike and Sarah take a long overdue vacation.