It is Christmas, and Susse and her mother have just moved in with her mother's boyfriend. Susse wants an older brother. She also has other Christmas wishes, but it doesn't go quite as she expected.
A few months have passed. Even though Erik (Susse's mother's boyfriend), wants to be on good terms with her, Susse is jealous of him and just wishes that the neighbor boy Bo was her older brother. Bo doesn't know anything about that yet.