The city had long fallen into silence, but it was not the kind of silence that brought peace. It was the kind that settled after everything had already been lost.
From the upper floors of the Alps Builders headquarters, the streets below looked frozen in time. Abandoned vehicles littered the roads, some crashed into each other, others left with doors hanging open as if their owners had fled in desperation. Between them, figures wandered aimlessly. Slow, uneven, and relentless, the infected moved through the city like ghosts that refused to rest.
High above it all, inside the towering glass structure, two people remained alive.
Kevin and Chelsea.
The building itself stood untouched, sealed off from the chaos outside. Kevin had activated the full security system days ago, locking down every possible entrance. Reinforced steel shutters had dropped over the lower levels, electronic locks secured all doors, and backup generators ensured that power remained stable. Surveillance cameras monitored every corner of the building, feeding live footage into the central control system.
From the outside, the building appeared abandoned.
From the inside, it was a fortress. Yet despite all of that, Kevin did not feel safe. He stood in the control room, staring at the wall of monitors in front of him. Each screen displayed a different section of the building's perimeter, the main entrance, the underground parking area, the emergency exits, and the surrounding streets. His eyes moved from one screen to another, scanning for anything unusual.
Chelsea leaned against the console behind him, her arms crossed tightly over her chest. She had been watching the same screens, but her attention kept drifting back to Kevin.
"They're getting closer," she said, her voice low but tense.
Kevin didn't answer right away. On one of the monitors, a group of infected had gathered near the front entrance. They wandered aimlessly, bumping into the reinforced doors, occasionally letting out hollow, distorted sounds.
"They can't get in," Kevin said finally, his tone steady.
Chelsea let out a quiet, uneasy laugh.
"That's what you keep saying."
Kevin turned slightly toward her, his expression hard. "Because it's true."
But even as the words left his mouth, the tension in the room did not ease.
Hours earlier, Chelsea had been alone on one of the upper office floors. The building had felt different then too quiet, too empty. Her footsteps echoed as she walked past rows of abandoned desks and silent computers. Papers remained scattered across the floors, untouched since the day everything collapsed.
The silence pressed against her, making every small sound feel louder than it should.
Then she heard it, a faint noise.
At first, she thought it was her imagination. But then it came again, a dragging, uneven sound that seemed to come from the direction of the emergency stairwell.
Chelsea stopped walking. Her eyes slowly shifted toward the door at the end of the hallway. It was slightly open.
Her chest tightened immediately that door had been locked. She was sure of it. Another sound came from behind it. Something was moving. Chelsea took a step back, her breath catching in her throat. The air suddenly felt colder, heavier, as if the building itself was holding its breath.
"That's not possible…" she whispered.
The sound came again, closer this time. Chelsea didn't wait any longer. She turned and ran. "Kevin!"
Her voice echoed sharply through the empty floor. "Kevin!"
Back in the present, Kevin replayed the footage from that moment. The camera near the stairwell showed everything clearly. The door had been closed, secured until it slowly creaked open.
Then a hand appeared, pale, shaking. Reaching through the gap.
Kevin paused the video, his expression darkening. "That shouldn't be possible," he muttered.
Chelsea wrapped her arms around herself as she stared at the screen. "I told you," she said quietly. "Something got inside."
Kevin rewound the footage and watched again, more carefully this time. His eyes narrowed as he focused on the lock mechanism.
"It didn't fail," he said.
Chelsea looked at him.
"Then how.."
"It was forced," Kevin interrupted. "From the inside."
The realization settled heavily between them.
"That stairwell connects to the underground parking," Kevin continued.
Chelsea's face paled. "But that area was sealed."
"It was," Kevin repeated.
Which meant something had already been inside before the lockdown. And now, it was trapped with them. The lights flickered.
Chelsea flinched instinctively. "Don't tell me the power's going out too."
Kevin glanced at the system panel. "No. The generators are stable."
But even as he said it, the lights flickered again, brief, sharp flashes that made the shadows shift unnaturally along the walls.
Chelsea stepped closer to him. "I don't like this."
Kevin exhaled slowly. "We'll check it out."
Chelsea grabbed his arm immediately. "No. We're not splitting up."
Kevin hesitated for a moment before nodding. "Fine. Together."
They moved through the hallway carefully, their footsteps quiet but deliberate. The corridor stretched ahead of them, dimly lit, every closed door carrying a sense of unease. Kevin held a metal bat tightly in his hand, his eyes scanning every corner, every shadow.
Chelsea stayed close to him, her breathing shallow then they heard it, a faint scratching sound. It came from behind one of the office doors.
Chelsea froze. "Do you hear that?" she whispered.
Kevin nodded. He stepped forward slowly, reaching for the handle. For a brief moment, he hesitated. Then he turned it and pushed the door open. The smell hit them first, rotting, heavy, suffocating.
Inside, a figure jerked violently toward them.
Its movements were twisted, unnatural, its body partially decayed but still moving with sudden, aggressive energy. Its eyes were lifeless, yet locked onto them with terrifying focus.
Chelsea gasped, stumbling backward.
Kevin reacted instantly. He slammed the door shut and threw his weight against it as the creature lunged forward from the other side.
The impact shook the door violently.
"It's inside!" Chelsea cried.
Kevin gritted his teeth. "Back up!"
He kicked the door hard, forcing it completely closed before quickly locking it again. The creature continued to slam against the door for a few seconds, each hit echoing through the hallway.
Then, silence.
Chelsea pressed her back against the wall, breathing hard. "I thought you said we were safe."
Kevin didn't respond right away because now, he wasn't sure.
Later, they retreated to one of the secured executive offices. The tension lingered in the air, but it had changed, shifting into something heavier, more complicated.
Chelsea sat on the edge of the couch, her hands still trembling slightly. Kevin stood near the window, staring out at the dark city below.
"You're thinking about her again, aren't you?" Chelsea said quietly.
Kevin didn't turn.
Chelsea let out a small, bitter laugh.
"Mia."
The name hung between them.
"She's probably dead," Chelsea added.
Kevin's jaw tightened.
Chelsea stood and walked toward him.
"Why not? You don't even know if she's alive."
Kevin finally turned to face her. "And you don't know she's not."
Chelsea held his gaze for a moment before softening her expression. "But I'm here," she said gently.
Kevin didn't respond. Chelsea stepped closer, reaching out to touch his arm. "You're not alone."
Kevin looked at her, conflicted. The world outside had collapsed. Everything they once knew was gone. And yet, here they were still alive, still breathing.
Chelsea moved even closer, her voice dropping to a whisper. "We might not get another chance."
Kevin hesitated. Just for a moment, then he didn't pull away.
Outside the office, somewhere deep within the building, a faint sound echoed through the empty halls.
A door creaked open slowly.
Quietly, unnoticed.
Inside the room, Kevin and Chelsea remained unaware.
And whatever had been trapped inside the building was no longer contained.