Kacper and Lena find a key, a hidden sigil, and a glowing gate under an old oak tree. What waits on the other side is only the beginning.
Kacper had walked through the park behind the school more times than he could count, and yet that night it felt wrong in a way he could not explain. The paths were empty, the lamps burned with a tired amber glow, and the old oak at the centre of the grass looked less like a tree than something waiting to be noticed.
Lena was already there, perched on a bench beneath its branches. Two years older and always a little harder to read than anyone else, she turned the faded key over in her fingers as if it had a pulse. They had found it earlier that day in the bottom drawer of her grandmother’s dresser, wrapped in a strip of cloth the colour of dust.
"There," she said, barely above a whisper.
Kacper followed her gaze. At the base of the oak, between the roots, a point of light flickered once, then again, as though something under the earth were breathing through a crack. They pushed past the hanging branches and crouched in the damp moss. In the soil, half-hidden by leaves, were a set of concentric circles carved with careful precision. Not random scratches. A mark. A warning. Or a keyhole in the shape of a symbol.
Lena knelt first. Her hand did not tremble as she lowered the key into the centre of the largest circle.
The ground answered with a low shudder.
A distant chime rang through the park, thin as glass and sharp enough to raise the hair on Kacper’s arms. The light erupted so suddenly that both of them flinched back, blinking against the flare. When it faded, the grass had split open where the sigil had been, revealing a vertical wound in the dark.
Not a hole. A gate.
Beyond it stretched a city that should not have existed: towers washed in silver light, streets threaded with a slow-moving river of brilliance, and strange winged shapes drifting above the rooftops like translucent insects. The air pouring from the opening smelled of rain, stone, and something metallic he could not name.
Lena swallowed, still staring.
"Do you think it’s real?" she asked.
Kacper opened his mouth to answer, but a voice came from behind them, soft and close enough to freeze the breath in his throat.
"It is real. But not everything that opens can be crossed safely."
They turned at once.
A figure stood beneath the oak in a cloak that gleamed like moving water, face hidden in shadow, hands empty and deliberate at their sides. The light from the gate trembled across the wet leaves, and for one suspended second the entire park seemed to hold its breath.