After a failed suicide attempt, a young woman named Veronika finds herself institutionalized and confronted with the reality that she has only a few days to live. Veronika must navigate the claustrophobic environment of the Villete mental hospital while grappling with the sudden, unwanted extension of her life. She encounters other patients whose own struggles with societal expectations and personal identity challenge her nihilistic worldview. The narrative follows her internal transformation as she interacts with the staff and residents, forcing her to re-evaluate the meaning of existence and the nature of madness.

This work is frequently analyzed for its existential themes and its critique of how society defines normalcy. Readers often focus on the protagonist's shift from despair to an appreciation of the present moment as the central emotional arc of the book. The prose is noted for its direct, accessible style which allows complex philosophical questions to remain grounded in the character's immediate experience. The narrative succeeds in prompting reflection on the choices individuals make when faced with the constraints of their own lives.