Bullied at school and ignored and abused at home by his indifferent mother and older brother, Billy Casper, a 15-year-old working-class Yorkshire boy, tames and trains his pet kestrel falcon whom he names Kes. Helped and encouraged by his English teacher and his fellow students, Billy finally finds a positive purpose to his unhappy existence—until tragedy strikes.

Mikolás and his brother Adam end up with a young German hostage of noble blood during a robbery. While their clan prepares for the wrath of the German king, Mikolás is sent to pressure his neighbor Lazar into a defense pact. Persuasion fails and he abducts Lazar's daughter Marketa on the eve of her initiation as a nun in an act of vengeance.