An abandoned boy navigates the criminal underworld of London, seeking to reinvent himself as a gentleman and soldier. Born into poverty and left to fend for himself, the protagonist known as Jack survives through petty theft and street smarts. His objective is to escape his life of crime and achieve social respectability, a goal that forces him into conflict with his own past, the law, and the rigid class structures of the early 18th century. The narrative is presented as a first-person memoir, detailing his progression from a pickpocket to a plantation owner in the Americas. The world is defined by the harsh realities of urban survival and the moral ambiguity of a man constantly reinventing his identity.

Readers and critics often note the work's focus on the psychological evolution of a character caught between criminal impulses and a desire for social legitimacy. Discussion frequently centers on the novel's realistic, often gritty portrayal of poverty and the mechanics of survival in early modern England. Scholars highlight the text as a significant example of the picaresque genre, noting how it balances adventure with social commentary. The pacing is described as episodic, reflecting the protagonist's erratic life trajectory rather than a traditional linear plot. Many readers appreciate the detailed historical context provided by the author's observations on colonial trade and labor.