Sophia, Maya, and Felix have come up with a spooky challenge – they want to camp alone for a night on the old Klosterberg. There, they stumble upon the old diary of the young novice Silvana, which transports them to the time of Hildegard of Bingen. The present and the past blur more and more, and the saint from the Middle Ages becomes increasingly tangible and fascinating for the children. A captivating journey into the past for young readers aged 10 and up.