An educated young woman, recently orphaned and jilted, takes a job as a cleaning woman in a poor neighborhood nursery school, concealing her diplomas to gain employment. The narrative chronicles daily life in the classroom and surrounding streets, offering vivid portraits of deprived children, their families, and urban squalor. Through close observation of play, instruction, illness, and administration, the narrator explores the demands of early childhood care, the limits of social institutions, and the emergence of maternal feeling and professional devotion. The work mixes social critique with humane empathy, presenting episodic scenes that trace the narrator's emotional transformation and the children's fragile resilience.