Seventeen-year-old Erik and Lena follow strange lights to the ruined stables, where a hidden mark in the stone begins to wake and the fog itself seems to answer them.
Fog pressed against Harven Castle as if the night meant to keep it sealed. From his perch on the narrow windowsill of the highest tower, Erik watched the courtyard dissolve into grey and listened to the castle settle around him, old stone creaking softly in the dark. His notebook was tucked under one arm, already full of sketches, half-finished theories, and questions no one else had noticed.
He was waiting for Lena.
At midnight, a pebble tapped the wall below his window. Erik leaned out just in time to catch the rolled map she threw up to him. Lena stood in the mist with her hood up and her torch hidden against her cloak, every movement sharp and controlled. "You still coming?" she whispered.
Erik nodded and shoved the map into his pocket. He should have felt foolish sneaking out of the castle like this, but the truth had been pulling at him for weeks. The strange lights over the fields. The strange hum in the air before dawn. The way the old book in the library seemed to hint at something buried beneath the hill, then stopped short of naming it.
No one had said the word aloud. Not once.
They crossed the sleeping corridors with their shoes in their hands, listening to the echo of their own breathing fade behind them. Outside, the fog swallowed the path at once. The castle vanished above them, all windows dark, all towers blind. By the time they reached the hill, the ruined stables were only jagged shapes against the mist, their broken roof ribs black against the sky.
Lena raised her torch. Light flashed over cracked stone, ivy, and an archway buried under years of moss. Erik stepped closer, and his boot caught on something flat beneath the weeds. He knelt, scraped away the damp green layer, and froze.
A stone slab lay hidden under the earth, marked with symbols so precise they looked cut that very hour. Some of them matched the sketches in his notebook. Others did not belong to any alphabet he knew.
Lena crouched beside him and dragged a finger over the nearest line, her face pale in the torchlight. Then the air changed. The fog tightened. The symbols answered with a faint pulse, and a thin seam of light opened in the wall beside them, leaking through the stone in colours Erik had no name for.
The glow widened.
Something moved inside it.