Leon and Bobby are brothers and members of the Deuces, a Brooklyn street gang. Ever since the death of their other brother Alphonse "Allie Boy" from a drug overdose at the hands of Marco, they keep drugs off their block. This puts them in opposition to the Vipers, another local gang headed by Marco, who want to sell drugs in the neighborhood. On the eve of Marco's return from a three-year stint in prison, a gang war seems imminent. Marco plans revenge against Leon, whom he believes ratted him out to the police.