The author uncovers a disturbing truth about her pioneering ancestor, forcing a re-evaluation of family pride and national history. Cal Flyn initially sought to connect with her ancestor, Angus McMillan, a celebrated figure in colonial Australia. Her research, however, revealed McMillan's complicity in the violent subjugation of Indigenous Australians, transforming her admiration into a profound reckoning with her family's legacy and the complex, often brutal, history of the continent. The narrative weaves together personal reflection, historical investigation, and travelogue across disparate landscapes.

The book is recognized for its intricate weaving of personal memoir with rigorous historical inquiry, particularly concerning the often-unacknowledged violence of colonial expansion. Critics have noted Flyn's unflinching examination of her own family's entanglement with this history, highlighting the emotional weight of confronting difficult truths. The narrative's strength lies in its ability to evoke both the stark beauty of the landscapes and the profound personal and historical reverberations of past actions. It is seen as a powerful exploration of how deeply inherited guilt and grief can be.