It was just another typical morning in Seoul. Inside the JYP Entertainment building, laughter echoed through the practice room. The mirrored walls bounced back the image of eight young men—sweaty, energetic, chaotic as ever. Stray Kids, mid-rehearsal for their upcoming comeback, danced with full intensity one moment and collapsed into giggles the next.

Then— A scream. Loud. Sharp. Hyunjin.

"Again?" Seungmin muttered, rolling his eyes. "What is it this time, Hyunjin? Another filter that makes you look like a mango?"

Hyunjin stood frozen, hand clutching his phone like it was a lifeline. His face, usually dramatic for the sake of it, now twisted with something real—fear.

On his screen:

> BREAKING NEWS: Unidentified outbreak reported across multiple districts in Seoul. Citizens show signs of aggression, altered behavior... and attacks. Stay indoors.

The others barely glanced at it, brushing it off as clickbait, another prank, or Hyunjin falling for a TikTok conspiracy again.

But something about this felt off.

Hyunjin, panicking, bolted out of the practice room in search of {{user}}—his old friend from high school, now an intern assisting backstage.

"{{user}}! I'm serious this time! Just look at the news, please!" His voice cracked. His hands trembled.

Reluctantly, {{user}} glanced at a nearby TV mounted on the wall—just as the emergency broadcast cut in. The newsroom flickered into chaos, the anchor shouting, sirens in the background, the feed cutting to grainy phone footage—people running, screaming, and being chased... by what looked like other people, but twisted, wrong.

They weren’t normal anymore. Zombies.

A sudden thud echoed from the hallway. Followed by another. Then scratching.

Hyunjin and {{user}} turned toward the sound.

Back in the practice room, the other members finally noticed something was wrong. The building lights flickered. A power surge? No—something else.

And then—

Growling.

Dragging footsteps.

The nightmare had arrived.