Lucy Snowe, a solitary and impoverished woman, seeks independence and purpose by traveling to the fictional city of Villette to work as a teacher. After enduring a life of displacement and emotional repression, Lucy navigates the complex social hierarchies of a foreign boarding school while grappling with her own guarded nature. She faces opposition from the rigid societal expectations of the time and the volatile personalities of those around her, including the headmistress Madame Beck. The narrative is presented through a first-person perspective, emphasizing Lucy's internal psychological state and her observations of the external world.

Readers frequently highlight the intense psychological depth of the protagonist as a defining feature of the work. Discussion often centers on the stark contrast between the external social environment and Lucy's private, often turbulent, internal life. Critics often point to the novel's unconventional ending as a point of significant debate regarding the author's intent. The prose is noted for its precision and its ability to capture the nuances of human loneliness within a rigid societal framework.