A group of teenagers - schoolchildren on the street, playing the guitar in the alley; a fight with passers-by on the street, at a disco. A policeman detains a young motorcyclist. The boys are "metalheads". Rock festival: performance of rock musicians, youth in the hall. Thieves get into the car. The adolescents detained by the police at the police station. Session of the court. The teenage defendant answers (synchronously) the judge's questions. The judge reads the verdict. Convicted teenagers in the colony.