Corrupt detectives organise an elaborate drug "sting" for their own profit. Meanwhile, senior police fear rampant corruption could lead to a royal commission.

Corrupt cop Dennis Kelly tries to further his career by joining the National Crime Authority. With her career in tatters, whistleblower Debbie Webb makes a fateful decision to join the fraud squad. Fed-up with prostitution, Kim Hollingsworth considers her career options.

Kim Hollingsworth finally reaches breaking point when her friend Wanda is found dead. Politician John Hatton achieves his goal of a Royal Commission into police corruption, and the announcement of a Royal Commission has an unexpected bonus for John Ibrahim.

Under pressure from the Royal Commission, Trevor Haken's paranoia reaches new heights. Drug boss Benny Kassab suspects a rat in the ranks, with deadly results. Police cadet Kim Hollingsworth is haunted by her colourful past.

Supergrass Trevor Haken risks everything to gather evidence against his mates. Chook Fowler takes bizarre steps to avoid testifying on police corruption. Kim Hollingsworth's police career is jeopardised when she agrees to go undercover for the Royal Commission.

Corrupt cop Dennis Kelly betrays his best mate to the Royal Commission, with tragic results. Gerry Lloyd makes a deadly deal with drug boss Shaka to expose corruption on the Golden Mile. Kim risks her life by going undercover for the Royal Commission. When the operation ends, she receives a shocking reward.

In the explosive final episode, Doc Kanaan plots to kill John Ibrahim and gain control of the Golden Mile. Joe Dooley and Strike Force Lancer smash DK's Boys and restore order to Kings Cross. Dennis Kelly hires a hitman to clean up his dirty past, as he lobbies for the job of Police Commissioner. Kim risks her life to avenge her unfair dismissal from the police force.