The tenement house at 16 Wspólna Street has long since earned the title of the most forgotten building in Warsaw. For most people, it was just another old building with falling plaster, shabby doors and a staircase that creaked with every step. For Natalia, Michał and Weronika, however, it was something completely different - a doorway to a world no one had even dreamed of. On Thursday evening, as the city began to fall asleep and the light of the streetlights drew cobwebs of shadows on the pavement, Natalia received an unexpected text message from Michal: "You have to see this. Meet me in 10 minutes in the basement. Don't ask." Although her heart beat faster, curiosity won out over reason. Through winding stairs and dark corridors, she reached the creaking basement door. Michael was already there, with a torch in his hand, and a slightly shaken Veronica. Neither of them said a word, but exchanged communicative glances. - 'Look,' whispered Michal, pointing to a brick wall at the end of the corridor. On its surface someone had scrawled a bizarre mark resembling a multi-eyed cat. The mark pulsed with a soft light, and as they approached it, suddenly the the wall began to dissolve like mist. Behind it stretched a long, narrow corridor, at the end of which coloured lights shimmered and a strange, sweet smell wafted out. Shelves full of old books, mechanical parts and even glowing jars of miniature stars rose from the walls. - Is this... a dream? - whispered Veronica, almost mesmerised. - 'I don't think so,' replied Natalia, stretching her hand out in front of her. Her fingers trembled slightly as they touched the air, which was warm, trembling and had.... music. Suddenly, a footstep sounded from around the corner of the corridor. Someone - or something - was approaching them and their hearts began to pound like mad. The figure was tall, clad in robes woven from smoke and light. Its voice was as soft as silk as it spoke: - Welcome to the Dream Vestibule. Are you ready to discover what your imagination is truly capable of? At the same moment, a bang sounded behind their backs - the door to the cellar slammed shut with a clatter. The three friends looked at each other and then at the mysterious figure emerging from the semi-darkness. They didn't yet know if they could trust her words, or what was really waiting at the end of the magical corridor. But now they had no turning back.