Having school problems, Thierry (17 years old) is kicked out from school and abandons his studies. Completely lost, the adolescent meets Jan, an adult who proposes to help him. Thierry is subjugated by this providential saviour, but he is incapable of fixing limits to the growing influence of this seductive adult. Destabilized by Jan's perversity, Thierry ends up by loosing all common sense. In spite of his dependence, the teenager will find the energy to reappropriate his existence.