Stella Hardy, the wisecracking social worker, is back to tackle crooked private contractors, an exotic cattle scam, and a delicious Mushroom Jalfrezi. All Stella Hardy wants is a romantic country getaway with her artist boyfriend, Brophy. Instead, she must head to the Athol Goldwater Agricultural Prison (aka Arsehole Bogwater) to visit her jailbird brother, Ben, and sort out some 'urgent' family paperwork. But Stella has barely set foot in the prison when a prisoner, Joe Phelan, is found dead. Before she knows it, Stella finds herself tasked, against her will, with investigating Joe's suspicious death away from the eyes of police, including her best friend, Detective Phuong Nguyen. Her old nemesis Minister for Justice Marcus Pugh is pressuring her from above to save his election-year bacon, and Joe's old friend and former gang member, Percy Brash, is providing a much more chilling form of pressure from below, promising to reduce her to mush and bone fragments if she doesn't give him the name of Joe's killer, and soon. As the clock counts down, Stella becomes embroiled in a story of corruption, conspiracy, and high-tech cattle-wrangling, all while trying to manage her brother's pregnant girlfriend, Loretta, get to the bottom of Brophy's increasingly strange behaviour, and evade the murderous intentions of a shadowy mercenary. And then things get really crazy. It's Stella's last hurrah, and she's going out with a bang.