A village in Germany is famous for a unique form of glass, but when the manager of the glassworks dies, the secret to its creation is lost. His son desperately tries to rediscover the process, while the rest of the villagers descend into madness. Werner Herzog's period drama, made with the cast under hypnosis, starring Josef Bierbichler and Stefan Guttler. In German.

A small Bavarian village is renowned for its "Ruby Glass" glass blowing works. When the foreman of the works dies suddenly without revealing the secret of the Ruby Glass, the town slides into a deep depression, and the owner of the glassworks becomes obssessed with the lost secret.