Eastern Sydney in the 1920s.Slumland streets controlled by crime bosses Kate Leigh and Tilly Devine.Lyndsey Collier, an ambitious country girl, joins the Women's Police. As her work draws her into Sydney's underworld, Lyndsey discovers a greater threat than the criminals she is investigating.Betrayed by a corrupt police officer, Lyndsey escapes into the shadows of underworld Sydney to protect the man she loves.A lifetime away and nearing death, Lyndsey reveals her story to Abigail Hollingsworth, a nurse at Kirkland Home for the Elderly. Caught up in the tale, Abby must also confront her own troubled marriage.