The rain drummed against the tall windows of the old high school. Amelia was sitting in the corridor, bored after her last lesson, when an inconspicuous cracked tile under the windowsill caught her eye. She sighed, pulling her sketchbook out of her bag, but curiosity won out - she walked over to the tile and moved it slightly. To the girl's eyes appeared a dark, narrow opening. Before she had time to think, her hand was already reaching into her pocket for the torch from her phone. Behind the opening was a rusty staircase leading downwards. Did anyone even know such a thing existed beneath the school? Amelia's heart beat faster. She called out to her best friend, Michal. "Look at this! We have to see where it leads!" - she whispered with a baked look on her face. Together they descended deeper into the darkness. At the end of the corridor, they found a door that gave way under slight pressure. Inside was a small stone room, full of dusty chests and... a huge library with old books. A particular leather-bound notebook caught Amelia's attention. There was no title on it, just a faded drawing - a map that showed the school, but also places she didn't know. She opened the first page and... the letters began to move. Words formed new sentences and images leapt out from between the pages. Michael froze in shock as a shadow emerged from the notebook - a figure clad in a strange cloak. - 'Welcome, explorers,' said a voice that echoed off the stone walls. - Are you ready to explore a world that exists only in your imagination? Amelia looked at Michael. They both felt reality begin to blur. The floor under their feet seemed to move and the room slowly changed shape. After a while, they were no longer standing in the basement of the school, but on the edge of a ravine full of rustling, energetic colours that should not exist in this world. Just in front of them, the shadow stopped and pointed ahead to a door pulsating in the air. - Only one of these paths leads back. The others... well, they may surprise you. Dare to choose. Amelia reached for the notebook, which pulsed with a strange energy in her hand. She and Michael looked into each other's eyes, and three completely different, unfamiliar passages stretched out before them.