Jonja.

13-year-old Jonja goes on vacation with the wealthy family of her best friend Paul. None of this would be a problem if the girl had told her mother about it - but she hasn't. Meanwhile, the days at the lake turn out to be extremely idyllic: Jonja falls in love with a girl and her friendship with Paul is strengthened even further. When it becomes clear that Jonja has lied, emotions run high...