Orphaned Zdeňka Štěpánová helps her foster parents in Moravia at an inn. One day she learns that she is to be taken in by the owner of a toy factory, Miloš Kavan, who will fulfill her father's last wish. At the same time that Kavan and his housekeeper Mrs. Julie are expecting Zdeňka, their caretaker's little niece Hanička arrives. Mrs. Julie initially considers her her protégé, because she has no idea that Zdeňka is already a grown-up girl...