A summer storm raged over the village as Lena, Igor and Nikolai huddled under the old oak tree, their favourite meeting place since childhood. The air was thick with the smell of damp earth, and lightning bolts cut through the sky as if someone had slashed it with a silver knife. - Maybe we should go home after all... - whispered Lena, looking up at the dark clouds. - Just a moment longer - answered Igor and kicked something among the roots. The ground under the tree collapsed slightly, revealing a fragment of a metal ring that had not been there before. Nikolai crouched down and began to clear the ring of mud. - It's probably some old door... - he stated, trying to open it. Suddenly it thundered, and a blinding beam of light shot out of the ring. All three jumped back, but curiosity quickly won out over fear. Lena leaned closer and stared at the centre of the luminous circle. On the other side, strange shapes shimmered: a city with tall, twisting towers, flying creatures and something that resembled a fiery bird. - It's... impossible - choked Igor. Suddenly the air around the portal began to pulsate. A soft, melodious whisper reached their ears, which they could not understand. Nikolai reached out and touched the shiny surface. In an instant, the world around them swirled. The rope beneath their feet began to unravel and the ground beneath their feet became transparent. A moment later they felt as if they were losing ground under their feet and falling into the depths of light. They opened their eyes... But everything around them was different. Completely different. Instead of the familiar meadow around the oak tree, they were now standing on a wide, purple bridge, suspended above levitating islands on which luminous creatures ran. Footsteps and mysterious laughter could be heard echoing in the distance. - Where are we...? - whispered Lena, holding Igor by the sleeve. Suddenly, a tall figure in a long blue cloak emerged from the mist, pointing a finger at them. The portal behind them slammed shut with a bang, and a disturbing noise grew around them. What awaited them in this unknown world? Would they find their way back?