Watch Hanni & Nanni 3 for Free: How to Stream the Movie Online at 123Movies. . The Lindenhof School is expecting a busload of proper young English ladies as exchange students. The shock is great when the students turn out to be teenage boys! But while Mademoiselle Bertoux is delighted to stage “Romeo and Juliet” with real boys, both Hanni and her sister Nanni fall for their “Romeo,” Clyde.