On one Sunday, when a scrap metal collection is announced, the children find a strange wire puzzle that grants every wish. Soon the town where the children live and go to school is in turmoil. But selfish adults, eager to investigate the mystery, destroy the spell...

Czech nobleman Petr Vok of Rozmberk (Milos Kopecký) is no longer so young, but his amatory adventures continue to arouse the envy of men and the indignation of respectable ladies. In his "female retinue" at the chateau in Bechyne he has twelve comely girls, but he still manages to seduce the miller's wife and the maid. Lord Vok is in great financial difficulties. His elder brother Vilém advises him to marry a rich woman. Petr surprises him by announcing his intention to marry the very young Katerina of Ludanice.

A young teacher is sent to a rural reform school, where he is faced with brutality of the inmates.