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. 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. What is Luca supposed to do with this? He has enough problems of his own-at school, at home, and at his sports club. Theo gently picks up on Luca's worries and reflects them back to him through past events. Until Luca takes matters into his own hands. But the secret of the magic string is only revealed at the end.
