"A Colonial Reformer" is set in the Australian colonies and follows the life of George Brinlay, a reformer who arrives in the colonies with the intent of improving social conditions. The novel explores the challenges he faces as he attempts to implement his reformist ideas in a colonial society that is resistant to change.The story provides a detailed portrayal of colonial life, including the social, economic, and political issues of the time. Brinlay's efforts to bring about reform often put him at odds with various groups, and his interactions with these characters drive much of the plot. His journey is marked by personal struggles, societal opposition, and the complexities of navigating the colonial system.