Plot synopsis: A host of actors in the classic national fairy tale by A. Jirásek. Jirásek's "Lucerna" is the best-known and most performed of his plays. It was also used by television producers. In the second half of the 1960s, a successful transcription was created with a remarkably well-captured atmosphere of the realistic-fairytale motif of the original. The film captures the acting mastery of Jan Pivec in the role of the castle's headmaster, the musicians played by Bohuš Záhorský and Vladimír Menšík, Zdeněk Štěpánek and Josef Kemr in the roles of the watermen Ivan and Michal. The television version of Lucerna premiered on Christmas Eve 1967, and each rerun only confirms that it is an excellent production.