Young, beautiful and deadly, best friends Amber, Ebony and Anna are on a mission to leave a past littered with tragedy behind them. With a determination spurred by the promise of a future free of financial hardship, they travel to Alice Springs, in the heart of the Australian continent, to rob banks and kill their way to a better life. Their plan is bold, daring, and meticulously executed; what could go wrong?

As the body count rises fast, Major Crime investigators Russell Foley and Sam Rose are assigned to the case. They pursue the three desperate, determined women north, first on the famous Ghan passenger train packed with tourists and heading to Darwin, then across rough, isolated, outback roads. This was never going to be easy.

Foley and Rose find themselves in a frantic chase to catch the killers and save lives - including their own - but can they catch them before more innocent people become victims of the Petticoat Gang?