The Maria Skłodowska-Curie School looked like any other - bright corridors, covered in grey carpeting, lit by the warm light of lamps. The school bell rang in the air, dispersing the crowd of students around the floors and classrooms. The day was gloomy; a fine rain fell outside the windows, drumming evenly against the window sills. Amidst this daily hustle and bustle, four students from the third year of high school stood out. Magda, always observant and fascinated by literature; Bartek, who never missed an opportunity to be at the centre of strange situations; Ola, calm but with a spark of courage; and Marek, who could defuse tension with a brilliant joke. On this day, they sat together on a windowsill on the second floor, looking for a break from their routine. "Oi, have you ever looked at the school plan?" - Magda asked suddenly, pointing to an old map hanging in a display case. "Are you saying we've missed something in three years?" - laughed Marek. Magda squinted her eyes. "Look - room 214 - we've been everywhere, but I don't think lessons are taught there anymore. In general, has anyone seen this room?" Bartek immediately picked up on the subject. His imagination was sparked by one word. "Maybe it's some old workshop that the school has forgotten about? Maybe there are things in there from the old days?" Ola shrugged her shoulders. "Maybe it's just standing empty because it's cluttered or something?" But that was already enough to ignite a spark of interest in everyone's heads. The decision was made quickly - they decided to find room 214 during the break after the maths lesson. When the time was right, they slipped quietly out of the crowd, making their way through one corridor after another. The further they walked, the less familiar the walls became. The corridors on the top floor were narrower, with windows obscured by opaque film and dim light. Finally, they stopped in front of a wide double door with a slightly faded plaque on it: 214. Marek put his hand on the handle, but the door did not budge. "It's locked," he whispered. Bartek looked around, searching for any alternative. After several attempts, they noticed that there was a small ventilation window behind an old cupboard next to it. "Wait, it's possible to slide your hand in here..." - Ola said, leaning into the window. Then a quiet click sounded - the door bent slightly under pressure. Light began to seep into the room through the ajar gate, but instead of the usual school desks, the interior was bathed in a strange, greenish glow. The shelves lining the walls were filled with dusty objects. Magda shuddered, her voice trembling slightly. "Can you feel it? It's like... the air in here is different." As they stepped carefully inside, the door unexpectedly slammed behind them with a deafening bang. For a split second there was silence. Bartek walked over to the blackboard at the end of the room and put his hand on it - and then, completely unexpectedly, one of the shelves began to slide open, revealing....