When Ola, Igor, and Weronika notice fresh footprints at the sealed Clock Tower door, they follow a hidden stairwell into a place that should not exist beneath their school.
Stanisław Lem High School had been standing in the middle of the Golden City long enough to feel less like a building than a memory. Its brick walls were softened by ivy, its windows reflected the sky like dull mirrors, and above it all rose the Clock Tower, its bell marking the day with a sound that carried through every corridor.
Ola, Igor, and Weronika usually met beneath the tower after lessons to complain about exams, argue about films, or pretend they had nothing better to do. That afternoon in June felt different. The air was heavy with coming rain, the halls were emptying fast, and the school seemed to be holding its breath.
Weronika stopped first. "Did you see that?" She pointed toward a narrow steel door hidden at the back of the tower. The lock hanging from it was split open, as if someone had forced it recently.
Igor frowned and stepped closer. "I've never even noticed that door before."
Ola crouched and swept the light from her phone across the stone floor. Fresh footprints crossed the dust near the threshold, sharp enough to make out the tread. Beside them lay an old brass handle, tarnished green with age, the kind that did not belong anywhere in the school.
"Someone was here today," she said.
The door gave way too easily, opening on hinges that complained in a low, dry groan. Behind it, a narrow stairwell dropped into darkness. The walls were scarred with peeling paint, names scratched into plaster, dates half erased by time. The air grew colder with every step down, thick with dust and something older.
"This isn't on any plan," Ola whispered. "There shouldn't be anything under the tower."
The staircase ended at a corridor that felt buried rather than built. Their footsteps echoed back at them, thin and uneasy, while somewhere deeper in the dark a sound shifted, soft but unmistakable, as if something heavy had just been dragged across the floor.
Igor froze. "Did you hear that?"
Before anyone could answer, the beam from Ola's phone caught a yellowed photograph propped against the wall. It showed three teenagers standing exactly where the three of them were now, wearing old school uniforms, staring straight into the camera. On the back, written in red crayon, was a date: 14 June 1972.
Then the sound came again, closer this time, from behind the closed door at the end of the corridor. The three friends looked at one another, and Igor, despite the sudden dryness in his throat, reached for the handle.