An orphaned boy navigates the brutal landscape of Victorian London while struggling to escape the clutches of a criminal underworld. Oliver Twist, an innocent child born into poverty, seeks identity and security in a society defined by rigid class structures and institutional cruelty. He is repeatedly exploited by figures like Fagin and Bill Sikes, who attempt to force him into a life of crime. The narrative follows his movement between the harsh workhouse system and the dangerous streets of London, testing his moral resolve against systemic corruption. The story is presented through a third-person omniscient perspective that highlights the stark contrast between the vulnerable protagonist and the predatory environment surrounding him.

Readers and critics frequently highlight the novel's effectiveness in exposing the harsh realities of 19th-century poverty. Discussion often centers on the stark moral dichotomy between the virtuous Oliver and the grotesque villains who populate the criminal underworld. Many observers note that while the plot relies on coincidences, the atmospheric world-building remains a defining feature of the work. The balance between social critique and character-driven drama continues to generate debate regarding the author's intent in portraying institutional failure. Readers often appreciate the enduring impact of the narrative's focus on the vulnerability of children within an indifferent society.