The iron plate shrieked again, bowed inward, and a jagged tear appeared near the top hinge, spraying a geyser of sparks. The construct’s brass claws scraped a fresh, deep furrow. Stefan cursed, a low, guttural sound, and leaned harder into the shuddering partition. Ilona felt the vibration through her boots, a low thrumming that threatened to loosen the very stones. The metallic tang of ozone, mixed with the sharp scent of overheating clockwork oil, filled the hidden chamber.
“It’s gaining purchase,” Stefan gritted, his voice strained. He turned his head slightly, his gaze darting to the wall behind Ilona. “The primary power conduits for this section run through that pillar. If it breaches, it will overload everything.”
Ilona’s eyes followed his. The pillar was a hefty column of dressed stone, but even it was beginning to show faint cracks from the repeated concussions. Her mind raced, sifting through the chaotic jumble of Stefan’s childhood journals. Resonant frequencies. Every component had one, a sympathetic vibration that could destabilize its structure. She remembered a specific diagram, a detailed rendering of a standard patrol unit’s core mechanism, its power source—a contained reservoir of humming, reactive alloys. The Kinemetal core. Its weakness was a specific, high-frequency impact.
“The Kinemetal core,” she said, her voice cutting through the mechanical din. “It’s housed in the central casing, just below the sensory lens. A sharp impact to its resonant frequency…”
Stefan’s head snapped towards her, his eyes, usually so guarded, now alight with a fierce, desperate intelligence. “You remember the resonant points?”
“From your journals,” she confirmed. “The schematic for the standard patrol unit, entry C-7. A quick, focused force. But how?”
Another jarring impact sent dust snowing from the ceiling. A claw ripped deeper into the iron, and the exposed gears beyond glowed cherry red with friction.
“Diversion,” Stefan said, pushing harder against the wall. “I’ll draw its attention. There’s a loose support strut behind that workbench.” He gestured with his chin towards a heavy, overturned table near the far wall. “It’s steel, dense. Can you throw it?”
Ilona stared at the strut, then at the shuddering partition. The thought was absurd. She was a scribe, not a combatant. Yet Matei’s frail face flashed in her mind. Destitute, at the mercy of their enemies. She had promised him a safe future. This was the price.
“I can,” she said, her voice firm, resolute. “Give me a clear shot.”
Stefan nodded once, his jaw tight. He shifted his weight, preparing. The rogue machine slammed into the wall again, and a section of the iron plate buckled, creating a narrow, ragged opening. A crimson targeting beam pulsed through the gap, scanning.
“Now!” Stefan roared. With a sudden, explosive push, he yanked a heavy, half-finished automaton frame from a nearby rack, sending it crashing into the wall beside the breach. The metallic clang was deafening, the sound echoing through the concealed space. The machine's red beam immediately focused on the new disturbance, its internal gears shifting with a grinding groan, pulling its attention away from the primary breach.
“The strut!” Stefan yelled, his voice rough with effort as he continued to bash the frame against the wall, creating a cacophony of metal against stone.
Ilona sprinted to the workbench. The steel strut was heavy, cold, rough against her palms. She gripped it with both hands, muscles straining, and lifted. It was clumsy, unwieldy, but she focused on the target: the construct’s midsection, a blur of brass and steel visible through the new, jagged opening. She remembered the precise point from the diagram. A low hum, a specific point of vulnerability.
She took a breath, measured her stance, and hurled the strut with every ounce of strength she possessed. The heavy metal spun end-over-end, a silver blur against the red glow of the automaton's lens.
It struck with a sharp, piercing *CLANG* that reverberated through the very bedrock. A shower of sparks erupted from the bronze casing, followed by a discordant shriek of stressed metal. The furious cycling whine of its gears faltered, then died with a choked, grinding gasp. The crimson beam flickered, dimmed, and extinguished.
Slowly, the pressure against the iron partition eased. The shaking stopped. The hidden chamber plunged into a sudden, unnerving quiet, broken only by Ilona’s ragged breathing and the distant creak of Stefan’s automaton frame as he lowered it to the floor.
Ilona stood panting, the ghost of the strut’s weight still in her hands, her gaze fixed on the now-darkened breach. Stefan turned, his chest heaving, his dark eyes wide and intense as they met hers. The rush of the blow still hummed through her veins, but it gave way to a sudden stillness that tightened her throat.
He moved towards her, his steps slow, deliberate. His face was smudged with dust and oil, a faint scrape visible along his jawline. He stopped inches away, close enough for her to feel the warmth radiating from his body, to see the subtle flecks of gold in his irises. The air between them settled into an intimate hush, taut with shared peril and unexpected triumph. His gaze dropped to her mouth, lingering for a fraction of a second before returning to her eyes, where a flicker of something raw and vulnerable shone.
Before either of them could utter a word, a sharp, insistent rapping echoed from the hidden door that led to the corridor beyond the workshop. It was Katarina’s voice, clear and urgent, muffled but distinct through the thick wood.
“Stefan! Ilona! Are you in there? The main workshop is locked down. Vostok has made a move! He’s publicly challenged you to a Contest of Artifice at the Gala! He’s using your father’s last design as the challenge, Stefan. He knows you never finished it.”