Chapter 1 – The Upward Fall

The steel grating of the upper tier shrieks before it gives way.

One second, my boots are planted firmly on the metal walkways of the hanging city, the familiar vibration of the seismic stabilizers humming through my soles. The next, the world violently rotates. Gravity snaps. The deck beneath me vanishes, becoming a ceiling, and the sky turns into a bottomless pit. I plunge upward. The gravity tide has reversed without warning, tearing me from the city’s underbelly and dragging me toward the blistering core of the inner sun.

Wind roars, thick with the scent of ozone and scorching iron. Pieces of the city—cables, sheared bolts, entire merchant stalls—fall upward alongside me, igniting as they near the atmospheric boundary of the core. Heat blisters my face. The blinding, molten ocean of the inner sun expands to fill my entire field of vision. My hands thrash in the empty air, finding nothing but ash.

Amidst the falling debris, a massive shadow eclipses the glare. Coils of obsidian scales, thicker than a transit tower, shift seamlessly in the burning air. A fault-serpent. A myth from the lower crust, moving through the fractured gravity as if swimming through deep water. Its massive, horned head snaps toward me, jaws parting to reveal rows of translucent teeth. It doesn’t strike. It aligns its descent with my fall.

Golden, vertically-slitted eyes lock onto mine.

A sharp, metallic thrumming reverberates in my skull, drowning out the roar of the sun. The unyielding law of the hollow world hooks into my chest. To reverse the pull, something must be given. A tearing sensation rips through my spine, a violent, bloodless extraction of something fundamental. The air shatters. The gravity violently flips again, and the blinding light is swallowed by absolute black.

Cold dirt presses against my cheek.

My lungs heave, pulling in the damp, mossy scent of an inverted forest. The heat of the inner sun is only a distant, muted glow filtering through a thick canopy of upside-down roots above. A ragged gasp breaks the heavy silence. A few paces away, a man is curled on his side against a petrified stump, his broad shoulders heaving. He is fully grown, his dark hair plastered to his forehead with sweat, his jaw clenched so hard a muscle ticks violently beneath his pale skin.

But it is his posture that makes the breath freeze in my throat. He grips his left knee, his body contorted in an agony I know intimately. His knuckles are white, his spine arched in the exact, crippling ghost-pain of the seismic collapse that crushed my leg five years ago. He is breathing through my nightmare.

I push myself up.

My left leg, which usually demands a cautious, bracing shift of weight, holds me flawlessly. I stand on the uneven, moss-slicked terrain of the wilds, and my body compensates with an alien, predatory grace. Every shift in the air, every microscopic tilt of the ground translates instantly into an effortless equilibrium. I have the balance of a creature that navigates the abyss.

My hands clench into fists. The smooth, painless perfection of my stance doesn’t feel like a miracle. It feels like a violation. The surface-dwellers stripped me of my clearance and abandoned me down here to die, and now this creature has reached inside my very biology and rewired it without my permission. I am holding a sense that does not belong to me. My fingers ghost over the heavy compass still chained to my belt, the only thing keeping me grounded in reality, my jaw setting into a hard line.

The man on the ground slowly uncoils.

He forces himself into a sitting position, his chest rising and falling in erratic rhythms. When he looks up, the eyes staring out from his human face are a striking, inhuman gold. The serpent.

"You stand well," he rasps. His voice is a low vibration that resonates directly in the hollow of my chest.

I step back, the flawless balance mocking my sudden panic. "What did you do to me? Give it back."

He doesn’t flinch. He just rubs the scarred knee that isn’t his, his expression heavy with centuries of exhaustion. "The tide required an anchor to flip your mass," he says quietly, his golden eyes unblinking. "The eye-lock bends the gravity, but the toll is a primary sense. I took your equilibrium."

He pushes himself up, leaning heavily against the trunk to favor my broken leg.

"And you took my pain," he finishes, the words falling like lead. "It cannot be returned or replicated, Daro Senn. We are bound to this trade forever, and the true tide has not even begun."