Theosa with the magic fiddle

The old charcoal burner Jeromir and his son Josa are actually the happiest people on Earth, if it weren't for one problem: Josa is the smallest and weakest charcoal burner’s son anyone has ever seen. One day, Josa receives a magical violin as a gift. A violin that can make any listener either big and strong or very small. With this violin, Josa sets off for the moon. Along the way, he encounters many people whom he can help thanks to his violin. He even manages to defeat the greedy king and his riders. Brave little Josa continues on until he finally reaches the end of the world. Here, he can play for the moon, which then alternates between becoming smaller and larger. The old Jeromir sees this and knows that no one but Josa is capable of performing such a miracle.