A clever but often teased boy, is able to clone himself thanks to a stolen formula from a scientist. Time to take revenge on those bullies.

Even ideology permeated the children's stories: the beginnings of forced collectivisation in the village are seen through the eyes of a young boy. As the son of an honest and deliberate communist official, there is no shortage of informed insight, even if it is lightened slightly by the occasional wacky idea. However, childhood friendships or even loves run up against the conflicts of an excited age, especially when the protagonist's best friends come from families of class enemies.

In the 1980s, a number of films were made about teenagers. At first they dealt with the confusing search for life orientation, the difficult entry into adult life - and gradually the interest shifted to delinquent youth. This film charts the conditions in a dehumanised housing estate, where youths, out of boredom, gather into gangs that wander aimlessly, humiliate passers-by, and attack the defenceless. He discovers that parents have too little time for these children, that their actions are downplayed until tragedy strikes.

Milda, a 13-year-old boy, loves to read adventure novels and imagines himself as a musketeer. He spends his summer vacation with his parents in a cottage in the Jizera Mountains, where he meets new friends and faces various challenges.