Technical school student Pavel Brychta, arrives at a youth correctional facility located within a chateau in Konečno. He is an atypical, but not hopeless case for the institution. Pavel comes from a well-off family and his antisocial behaviour on the verge of criminality was some kind of response to his difficult relationship with his authoritative father. However, it takes quite some effort for Pavel to find his place in this environment of bullying, and also diverse methods from the tutors

The director of films for kids called Bonzurka together with her loyal assistants Drahuska and Honza are looking for the actors for a new movie "The Knee". Children for this movie should not be afraid and shy and they must have talent for acting. Thus the scouting is quite difficult. The most difficult is to find an actress for a main character who lost her hair after a serious illness and now has to spent the whole holiday in the countryside with a bald head resembling a knee. Although the makeup artist does his best an artificial baldness does not solve anything. From the selected little girls only the self-assertive Rosemary has the guts to let her long hair to be cut and shave off her head.