Flo is not quite a normal teenager: While all his friends only think about sex he can't even pronounce the word "S - E - X". But everything changes completely when one morning Flo wakes up from a strange call. His penis, excited for the first time, begins to talk to him. He claims that Flo severely neglected him for 15 years and it's time to release him.
When Katharina got an unexpected letter from her son Hans announcing that he was getting married and that he and his fiancé Nicki were leaving Berlin to come visit her...
After charming her reclusive grandfather and falling in love with the beautiful mountain he calls home, Heidi is uprooted and sent to Frankfurt where she befriends Klara, a young girl confined to a wheelchair.
