1: The Day the Sky Went Wrong

There’s a particular kind of silence that doesn’t feel natural.

You know the kind—the air goes still, the wind disappears, and even the birds decide, Nope, not today. That’s usually when you know something is about to go very wrong.

Unfortunately, I wasn’t at Camp Half-Blood when it started.

I was in New York.

Again.

“I’m just saying,” Grover bleated beside me, adjusting his fake human sneakers, “maybe we should head back to camp. Like, immediately. Like, right now. Like, yesterday.”

“Grover,” I said, “you always say that.”

“That’s because leaving camp is statistically proven to reduce our average lifespan by, like—” he paused, counting on his fingers, “—a lot.”

Annabeth rolled her eyes. “That’s not how statistics work.”

We stood near the edge of Central Park, pretending to be normal teenagers on a normal afternoon. Which, for us, meant we were seconds away from being attacked by something mythological.

Everything looked normal.

That was the problem.

The sky was perfectly clear—too clear. No clouds. No wind. No movement. It was like someone had frozen the world and forgotten to unpause it.

“You feel that, right?” I said quietly.

Annabeth nodded. Her gray eyes scanned the sky like she was trying to read invisible blueprints. “Something’s off. This isn’t just weather.”

Grover sniffed the air.

Then he made a face.

“Oh, that’s bad,” he said.

“What?” I asked.

He hesitated. “It’s… old.”

“Old?” Annabeth repeated.

“I mean really old,” Grover said. “Like-before-Olympus-was-Olympus old.”

A chill crawled up my spine.

That was never a good sign.

Before I could say anything else, the ground trembled—not violently, but just enough to make the trees shiver.

Then the shadow appeared.

At first, I thought it was a cloud finally drifting into the sky.

But it wasn’t in the sky.

It was on it.

Spreading.

Like ink bleeding across paper.

“Okay,” I said. “That’s new.”

The darkness stretched, growing larger, darker, swallowing the blue above us. It didn’t move like anything natural. It crept.

And then—

Something pushed through it.

Not flew.

Not fell.

Pushed.

Like it was forcing its way into our world.

Grover grabbed my arm. “Percy… tell me you see that.”

“I see it.”

Annabeth stepped forward, her voice tense. “Impossible…”

“What is it?” I asked.

She didn’t answer right away.

That scared me more than anything.

Finally, she said, “It’s not just a monster.”

“Then what is it?”

The thing broke fully through the sky.

For a moment, all I could see was a massive, shifting silhouette—too big, too distorted to understand. Wings—or something like wings—unfolded, but they didn’t look quite right, like they belonged in a painting that had been erased and redrawn too many times.

Then it turned.

And I swear—

It looked straight at me.

“Run,” Annabeth said.

I didn’t argue.

We bolted into the park just as the creature let out a sound that didn’t belong in any world—half roar, half something older, something that made my brain feel like it was glitching.

Trees shook. People screamed in the distance.

“Any idea what that thing is?!” I yelled as we sprinted.

“No!” Annabeth shouted back. “And I hate not knowing things!”

That’s when you know it’s bad.

Grover stumbled beside us. “I—I don’t think it’s supposed to exist!”

“Great!” I said. “Love that for us!”

The ground cracked behind us.

I risked a glance back.

Big mistake.

The creature was descending now, its shape clearer—but not clearer in a good way. It looked like it was constantly shifting, like reality itself couldn’t decide what it was supposed to be.

And the longer I looked at it, the more my head hurt.

“Don’t look directly at it!” Annabeth snapped.

“Little late for that!”

She grabbed my arm and pulled me forward. “Percy, listen to me. Whatever that thing is—it’s not just a monster. It’s wrong. Like it doesn’t belong in the timeline at all!”

“Okay, cool,” I said. “So how do we stop it?”

She hesitated.

“I don’t know.”

Behind us, the creature slammed into the ground.

The impact sent a shockwave through the park, knocking us off our feet.

I hit the grass hard, my ears ringing.

For a second, everything went quiet again.

Then a voice echoed through the air—not loud, but everywhere.

“Child of the sea…”

My blood ran cold.

I pushed myself up slowly.

“Did… did it just talk?” Grover whispered.

Annabeth didn’t answer.

The voice came again, clearer this time.

“Percy Jackson…”

I stood, gripping Riptide as it appeared in my hand.

“Yeah,” I said, trying (and failing) to sound brave. “That’s me.”

The creature shifted, its form rippling like a broken mirror.

“You were not meant to remember us,” it said.

My heart pounded.

“Us?” I repeated.

The shadow in the sky deepened.

And for a moment—just one moment—I thought I saw something impossible.

A symbol.

Ancient.

Broken.

Erased.

“Camp Half-Blood has forgotten,” the voice continued. “The gods have erased. But we… remain.”

Annabeth stepped beside me, her face pale.

“Percy…” she whispered. “If that’s what I think it is…”

“What is it?” I said.

She swallowed.

“A god,” she said. “Or something that used to be one.”

The creature took a step toward us.

The ground cracked beneath its weight.

“And it remembers you.”