The love between Mateusz Krol, a Kashubian boy, and Marita von Krauss, a Prussian aristocrat in whose family home he is taken in when his mother dies, grows and matures thorough the years, while Kashubia, the northern Polish region where they live, suffers the consequences of the tragedies that will ravage Europe from the beginning of the 20th century until the end of the World War II.
