Poor Bibi - due to her bad marks in maths she has to spend the whole summer in the boarding school of Altenberg to scrape through a series of exams - otherwise she'd stay down in school, being forced ...

Mania and Amanda are visiting Barbara. Suddenly, Bibi crashes through the window and lands right in the middle of the cake. Unfairly, she blames her mashed potatoes for the bad landing. Father ...

There's a whole world under the surface and only Ron has any idea about it.