Underbelly säsong 4

Gangster Norman Bruhn arrives in Sydney with one plan, to take out crime queens Tilly Devine and Kate Leigh.

Norman realizes he has to up the ante to get rid of Tilly and Kate, using his boys, they slash the throat of Sid "Kicker" Kelly.

Darlinghurst is at war, the heads of the underworld unite to shoot Norman in the knees scaring him back to Melbourne.

Norman Bruhn is dead forcing Bill Mackay to increases his pressure on Kate and Tilly, Nellie hooks up with Frank Green.

Phil Jeffs is accused of rape, leaving his cocaine business up for grabs. Kate and Tilly start planning against each other for his share of the business.

The rivalry between Kate and Phil increases, pressure is on all of them as the police form a drug squad to fight their cocaine business.

Tilly tries to take over while Kate is in prison; Wally continues to keep Kate's business and family intact.

Frank Green sparks a deadly vendetta tearing Kate's gang apart; Tilly reveals she is pregnant; Kate is desperate to leave prison.

Kate is out of prison putting a bounty on Big Jim and Frank Green; Tilly vows to eliminate Kate's muscle.

Frank pursues rival Guido in Long Bay Gaol; Tilly does all that she can to protect Frank; Wally leaves Kate.

Tilly chooses exile over jail; Kate hires Guido to provide protection; Big Jim shoots Tilly when she finds him in bed with the maid.

Tilly refuses to testify against Jim; Bill Mackay is put in charge of stamping out the New Guard; Guido stabs Frank.

Phil is back in town vowing to destroy Kate; Sydney Harbour Bridge opens; Nellie chooses Guido to follow; Kate and Tilly face off for the final time.