The terrifying Melbourne crime underworld features a gang of armed robbers - The Cody brothers - lead by their matriarchal grandmother, Smurf. The biggest threat to the gang is not other felons or renegade cops but one of their own. Nephew "J" - newly initiated and reeling from the death of his mother and a close friend - is targeted by investigating officer Guy Pearce as the key to conquering the Codys.