When a young boy named Custard is abducted from his isolated farm, he is thrust into a harrowing struggle for survival against the unforgiving landscape of 19th-century Australia. Custard, often perceived as slow-witted by those around him, must navigate the physical dangers of the bush and the psychological toll of his sudden displacement. The narrative follows his attempts to reclaim his autonomy while facing hostile forces that seek to exploit his vulnerability. Through a third-person perspective, the story examines the intersection of human resilience and the harsh, indifferent environment of the colonial frontier.

This work is characterized by its stark, atmospheric portrayal of the Australian bush and its focus on the internal life of a misunderstood protagonist. The narrative structure emphasizes the physical and mental trials of the central character, creating a sense of mounting tension throughout the story. Readers often note the author's ability to capture the unforgiving nature of the landscape, which serves as a backdrop for the boy's transformation. The book is recognized for its unflinching look at the vulnerabilities of youth and the harsh realities of life in a remote, colonial setting.