<p>Luca just wanted to apologize. While skating, he had bumped into a wheelchair user: Theodor Langhans, the director of the city museum, who suffers from osteogenesis imperfecta.<br>But it doesn't stop at one visit. Theodor opens up a magical world for Luca. At each meeting, he has a story ready that takes them back to distant times and strings together colorful personalities as if on a string.<br>What is Luca supposed to do with this? He has en...