Ironbark Creek: Blood Lines is the follow up and continuation of the Ironbark Creek trilogy. In it, Cathy and Jack and all the people at Ironbark Creek face two new threats. One from the military arm of the Global Reset Committee and one from the final grey, that is set on revenge. They are joined by two refugees from Darwin and learn of a wider threat. Again they have to fight to save their home, their community and thei land.