Zuza was studying philosophy at the University in an old, neo-Gothic edifice whose corridors she knew by heart - at least she thought she did. One autumn afternoon, as the light of the setting sun peeked into the library through the colourful stained glass windows, Zuza came across something that didn't fit into her daily routine. While searching for a book on Norse mythology under a bookcase of Scandinavian literature, her fingers felt a cracked brick. She pressed it by accident - or was it fate? - and the wall trembled, revealing a narrow corridor. Her heart began to beat faster, but curiosity won out over reason. She stepped inside. The cool air and the smell of old books led her deeper and deeper. The staircase, which was not on any map of the university, spiraled downwards. When she finally reached the bottom, she saw a door with a sign: "Chamber Club - entrance for initiates only". Her hesitation lasted a moment. She knocked. The door was opened by a tall man in a black tailcoat. His eyes shone with an unusual light and soft music could be heard in the background. Zuza stepped inside, where a dozen people were already waiting, bent over ancient books and chessboards. In the middle of the room stood a strange object: a small box inlaid with mysterious symbols. Everyone present stared at it, as if expecting the arrival of something unusual. - Welcome, Susanna. We have been waiting for you,' said the host. - We would like to show you something that will change your view of the world. Zuzana felt a mixture of excitement and fear. All those gathered looked at her. - 'If you are ready,' the man spoke up again, 'you can open the box. Silence fell in the room. Zuza's hand trembled as she reached for the lid. At the same moment all the lights went out for a moment and....