The city of Oakhaven did not sleep; it ticked.
Beneath the soot-stained sky of the Industrial District, Silas Vane hovered over a mahogany workbench littered with brass springs and glowing vials of mercury. His goggles reflected the rhythmic pulsing of the city's heart—the Great Crank—which sat at the center of the metropolis, powering every streetlamp and automated carriage with the relentless force of steam and sorcery.
"Steady," Silas whispered to himself. He held a pair of silver tweezers, hovering over the exposed guts of a mechanical hummingbird.
Unlike the standard clockwork pets sold in the Upper Tiers, this bird wasn't powered by a spring. Instead, a tiny, swirling vortex of blue lightning trapped in a glass sphere served as its heart. It was Aether-tech, a fusion of forbidden alchemy and precision engineering. One wrong move and the bird wouldn't just fly; it would detonate, leveling his workshop and likely half the block.
The Intruder
A sharp, rhythmic thud echoed from the heavy iron door of his shop. Thump. Thump-thump. Thump.
Silas froze. It wasn't the frantic pounding of the City Watch, nor the heavy boots of a debt collector. It was a coded knock—one he hadn't heard in seven years.
He set the tweezers down, his hand instinctively drifting to the heavy wrench tucked into his leather apron. He pulled the sliding viewport back.
A woman stood in the rain, her silhouette framed by the amber glow of the gaslight. She wore a high-collared coat of midnight blue, and her left arm was encased in a sleek, silver prosthetic that moved with more grace than any machine Silas had ever seen.
"The gears are grinding, Silas," she said, her voice barely audible over the hiss of the steam pipes.
"And the oil is running thin, Lyra," Silas replied, the counter-sign tumbling out of his mouth before he could stop it.
He threw the bolts back and ushered her inside. The smell of ozone and expensive perfume flooded the cramped room. Lyra, a former operative of the Emperor's "Shadow-Scribes," looked older than when they had fled the Academy, but her eyes—one green, one a glowing mechanical amber—remained sharp.