Kos (nearly 13) doesn’t understand a thing about women. His mother passed away 3 years ago, so now he lives with his father and three inexplicable and insufferable sisters in their hotel at the North Sea beach. His sisters – Libbie (18), Briek (14) and Pel (8) – are mostly busy with themselves and don’t think about their footballer brother. The movie was based on the book by Sjoerd Kuyper.