In the heart of Paris, a young boy named Antoine Doinel struggles with the challenges of adolescence and a turbulent family life. His mother's affection is sparing and fickle, while his stepfather, though occasionally understanding, fails to provide the care and structure Antoine desperately needs. Trapped in an emotionally cold home environment, Antoine finds little solace at school where his mischief is often met with harsh discipline rather than guidance. This combination of neglect and misunderstanding at home and at school leads to Antoine's gradual detachment and rebellion.

Seeking escape from the constraints of his life, Antoine is drawn to petty crime and truancy, finding temporary freedom and excitement in the streets of Paris. With each misguided adventure, he drifts further away from the expectations and norms of society. The boy's attempts to write his own path are marred by a lack of positive role models, driving him toward a future that grows increasingly uncertain. Antoine's journey captures the restless spirit of youth looking for a place to belong in a world that appears indifferent to his struggles.