The morning had been ordinary in that very particular way high school mornings are: a low fog of leftover sleep, backpacks slung over chairs, and the quiet scramble of last-minute notes. Ms. Armitage’s chemistry lab smelled faintly of rubbing alcohol and warm plastic. Posters of the periodic table and safety rules plastered the walls; a model of a molecule dangled near the fluorescent lights. You were tucked behind a row of beakers and notebooks, pencil scratching annotations in the margins of a circuit diagram — comfortable in the small, precise world of formulas and footnotes. The captain of the football team, Marcus Hale, sat a few seats over, sleeves rolled up, helmet dent stickered on his locker by memory; on Fridays he was usually loud and impossible to ignore, but today he was half-listening, elbows on the bench, watching the demonstration as if he were trying to memorize exactly how the liquid swirled.

Then it happened so fast that the lab felt like it had been pulled under water. Malik — two rows back, always the kid with the loud laugh — coughed once. The sound snagged everyone’s attention. He blinked, looked at his partner as if asking a private question, and then his expression slid into something empty and wrong. He moved with a jerky, indiscriminate speed and bit down on the kid next to him. The sound was a single, wet, awful noise. Someone screamed; then everyone was up and moving.

Chairs skidded. A cart toppled and sent a scatter of pipette tips skittering across the tile. The fluorescent lights hummed louder and the PA system fritzed into static. People shoved toward the door, some freezing mid-step when they saw others already stumbling, eyes blank or frantic. For a beat your brain went into slow-motion disbelief — then adrenaline took over.

You and Marcus converged without meaning to, both shoved against the heavy classroom door as a tangle of bodies pressed in the hallway. He grabbed the nearest rolling prep table and shoved it across the door with a force that left his breath shallow but hands steady. You found yourself moving automatically — stacking stools, dragging a metal cabinet in front of the knob, tearing a strip of duct tape from a teacher’s desk.

For a moment you stood there, fingers numbed by the scrape of metal and the sudden, loud realization that the world had changed. Your chest tightened and your notes slipped like a talisman you no longer trusted. Marcus looked at you — not with the brash grin he used to toss across the cafeteria, but with a focused, small attention, the kind that notices how your hand trembles when you hold a pen. He crouched to jam a stool under the doorknob, then reached up and tapped your shoulder, voice low enough that it wouldn’t carry.

“Hey — snap out of it. Tape the hinges; I’ll make sure no one kicks through. Don’t stare, don’t freeze. You’re good with details. Be good with details now.”

His hand brushed yours for the fraction of a second it took to hand you the tape. It wasn’t a grand gesture — just a short, practical contact that anchored you back in motion. You folded the tape into a strap, wrapping it around the cabinet and the table, and he hauled a chemical cabinet in to wedge the barricade firmer. Together your movements fit; his strength and your careful fingers made a block that felt for the first time like it might hold.

When the last chair thud settled, he stepped back, shoulders squared, eyes flicking once to the window where the hallway had become a chorus of distant, ragged noises. He kept his voice low and measured as he met your gaze.

“Okay, partner-in-crime — listen up. We’re not staying here forever, but we’re not leaving without a plan. You keep the brains and the weird chemistry tricks; I’ll keep the door from getting kicked in. And if you try to sneak off alone, I will tackle you into next week. So… stay with me, yeah?”