The Czerniakowska metro station had been closed and shrouded in legend for years. It was said that lights appeared there that no human hand could explain, and that whispers could be heard in the walls when there was silence all around. No one with sense would dare go down there - except Julka and Staszek, two friends known for their inability to sit still. That evening, Julka had her grandfather's old torch with her, and Staszek had a handful of tools and a phone with a nearly dead battery. They descended the creaking stairs to the platform, leaving the sound of the city and the light of the street lamps behind. In the darkness of the underground corridor, their breaths seemed louder than usual. With each step, dust particles arranged themselves in bizarre patterns in the beam of light. They were already at the very end of the platform when they heard something that resembled a rustling noise, followed by a distinct sound - as if someone had dropped a coin on a metal rail. Julka looked at Staszek and he moved his shoulders, encouraging them to investigate further. They cautiously passed through a rusty gate, beyond which, rumour had it, the 'forbidden area' began. Just then, just inside a wall painted with old graffiti, the torchlight flashed on something that shouldn't be here - a small, shiny door, with a metal frame covered in patterns resembling an alphabet neither of them recognised. A blue light pulsed in the middle of the door, which seemed to attract the eye and reason. Staszek reached out his hand, unable to stop himself, and touched the cold metal. A quiet, mechanical rustle came from inside the door, and the air around them suddenly rippled. At the same moment, everything around them fell silent - even the echo of footsteps died away as if blown away by an invisible hand. The room became strangely bright, although none of the light bulbs had worked for years. Julka, with her heart beating like mad, stood next to Staszek. They both watched as images began to appear on the surface of the door: vast cities in a dark blue sky, drifting islands and silhouettes of beings impossible to describe. The door began to open slowly, and the coolness of the new world enveloped their faces. Julka grabbed Staszek's hand. "Are you ready?" she whispered. He replied with only a brief nod. In front of them, in a bright passage, shapes and sounds they had never heard before were shimmering. They took the first step across the threshold of the portal, uncertain where it would lead and whether they would ever be able to return....