Life is rough for Shirl Hennessey. Her son, Steve, is dead, shot by police. Her other son, Mal, is facing a possible life sentence for murder. She is left at home with her daughter, Rhonda, daughter-in-law Kirsty and their children. However, when she is arrested for shoplifting and possession of a pen pistol, Shirl sees a chance to get the break she needs—a short stint in jail away from life's pressures.

Rhonda Hennessey's de facto husband, Darren Mack, attempts to run an extortion racket inside prison, but his first victim does not frighten easily and turns Darren in. The situation is exacerbated when Michael Kidd sees this as an opportunity to further discredit Peter Faithfull and his team.

Darren Mack is on trial for extortion. Michael Kidd is doing his best to prevent Darren's sentence from being increased, only to be sacked by the Hennessey in-law. However, unlike Mal, Darren's attempts to represent himself begins to verge on the ludicrous.