Amy Dorrit, a young woman born and raised within the confines of the Marshalsea debtors' prison, struggles to maintain her dignity and support her family amidst the crushing weight of systemic poverty and social stagnation. Amy navigates the rigid hierarchies of Victorian London, serving as the quiet anchor for her father, the 'Father of the Marshalsea,' whose pride blinds him to their reality. She encounters Arthur Clennam, a man returning to England to resolve his family's dark secrets, whose arrival initiates a series of events that threaten the fragile status quo of the Dorrit family. The narrative employs a third-person omniscient perspective to dissect the intricate connections between the bureaucratic Circumlocution Office and the lives of those trapped by debt and class expectations.

Readers frequently highlight the novel's biting social commentary and its meticulous portrayal of the suffocating nature of institutional bureaucracy. Discussion often centers on the character of Amy Dorrit as a symbol of selfless endurance against the backdrop of a decaying social order. Critics often point to the expansive cast of characters and the intricate, sometimes slow-moving plot as defining features of the reading experience. Many appreciate the atmospheric depth Dickens achieves in his descriptions of the Marshalsea, which serves as a central metaphor for the entire society depicted in the text.