Cathy, known as Katri, is a nine-year-old girl living in Finland during the First World War. Her mother left for Germany three years ago, leaving her with her grandparents. This separation happens against the backdrop of Finland under Russian rule, creating communication barriers and leaving her uncertain if she'll ever reunite with her mother.

Her grandparents' farm battles severe hardships: a poor harvest, the loss of their only cow to a bear attack, and significant financial struggles. These challenges force her to seek work at a neighboring farm despite her young age. Her duties there include herding cattle, showing her willingness to tackle demanding physical tasks.

She demonstrates diligence and resilience, managing daily chores on her grandparents' property while adapting to farm labor. She maintains enthusiasm and a positive outlook despite these burdens. Her social life includes forming friendships with two local boys, indicating her ability to connect within her community.

The ongoing war and occupation complicate her emotional journey, deepening the ache of her mother's absence. The geopolitical situation restricts information flow, heightening her uncertainty. Her labor on the neighboring farm signifies not just economic necessity but also her growing independence and sense of responsibility for her family's survival.