An adaptation of B. Prus's novella. The story takes place at the end of the 19th century, in a manor house falling into ruin. The protagonists are children: the steward's son, the countess's daughter, and a peasant child. The 1970s. The story of a twelve-year-old boy, Kazio, who is unruly but has a good heart. He stands up for the weak and oppressed and experiences romantic love for Countess Loni. However, this love forces him to reject friendship. Kazio is deeply affected by this and falls seriously ill.