The Overnight Shift

I work as a stocker at SaveMart, the 24-hour supermarket on Ashland Avenue. It’s a dead-end job, but it pays enough and the overnight shift means I don’t have to deal with customers during the day. Just me, the fluorescent lights, and rows of products to organize.

The store is usually empty after midnight. A skeleton crew. Me, a cashier named Robert, and Marcus, the overnight manager. We barely see each other. Robert sits at the front, and I work the aisles, putting things where they belong.

Three weeks ago, I noticed something moving in aisle 7.

Not a person. Something else. Something that moved wrong—too fluid, too deliberate, like it was practicing how to walk.

I ignored it. Late night, tired brain. I told myself it was a shadow or my eyes playing tricks.

But the next night, I saw it again. In aisle 12 this time. Standing in front of the canned vegetables, just… looking at them. Studying them.

I approached it. As I got closer, it became clearer. It was a human shape. But not quite right. The proportions were slightly off. The way it held itself was unnatural. Like someone had built a person out of theoretical knowledge of what people should look like.

“Can I help you find something?” I asked.

It turned to look at me. Its face was blank. No expression. No recognition.

“I’m looking for products,” it said. Its voice was flat, like it was reading from a script.

“Okay,” I said slowly. “What kind of products?”

“All of them,” it said. “I need to catalog all of them. Every product in the store. Every shelf. Every item.”

“Are you a stock auditor or something?” I asked.

“No,” it said. “I’m just… learning.”

It turned back to the canned vegetables and started reading the labels. Very slowly. Very deliberately. Like it was memorizing each one.

I left it alone and continued with my work.

But the next night, there were three of them.

One in the cereal aisle, one in the frozen foods, one examining the cleaning supplies. All of them moving with that same unnatural fluidity. All of them studying the products. All of them reading labels with intense concentration.

I mentioned it to Marcus.

“Yeah,” he said. “They come in after hours. Just… walk around. Look at things. They don’t buy anything. They don’t talk to anyone. Just… observe.”

“What are they?” I asked.

“I don’t know,” Marcus said. “They started showing up about a month ago. They’re not on any security footage. They don’t have customer accounts. They just appear when the store is closed to the public and they walk around cataloging everything.”

“Should we call the police?”

“For what?” Marcus said. “They’re not doing anything illegal. They’re not stealing. They’re not hurting anyone. They’re just… shopping. Except they’re not buying anything.”

“That’s not normal.”

“No,” Marcus agreed. “But it’s not criminal either.”

Over the next week, more of them appeared.

Five. Then ten. Then more than I could count. They would enter the store after closing and disperse throughout the aisles. Each one moving methodically, reading labels, studying products, taking mental inventory of everything.

They didn’t interact with each other. They didn’t talk to me or Robert or Marcus. They just moved through the store like it was a museum, cataloging every item.

Robert started to get spooked.

“This isn’t right,” he said one night. “These things—they’re not people. Look at how they move. Look at their eyes. They don’t blink.”

He was right. I started watching them more carefully, and they never blinked. Never showed any sign of human behavior. Just moved and observed and moved again.

One night, I tried to block the entrance. I wanted to see if they would stop coming if I prevented them from entering.

I locked the front door early. Turned off the automatic opener. Stayed near the entrance.

At midnight, they appeared anyway. They just walked through the locked door like it wasn’t there. Like they were passing through from another dimension.

I ran to find Marcus.

“They came through the door,” I said. “They walked right through it.”

Marcus wasn’t surprised.

“Yeah,” he said. “They’re not really here. Not in the way we’re here. They’re observing from somewhere else. The store is visible to them, but they’re not quite in the same space we are.”

“How do you know that?” I asked.

“Because I tested it,” Marcus said. “I tried to touch one. My hand went right through it.”

I spent the rest of the night watching them.

They moved through the aisles, reading every label, studying every product. And I realized something as I watched them. They weren’t random. They were methodical. Each one was assigned to a specific section. They were cataloging the entire store.

By the end of the night, they had documented every single product on every single shelf.

The next night, they were back. But this time, they weren’t just observing. They were comparing.

I watched as one of them examined a shelf of pasta boxes. It looked at each box, comparing them to something—a list maybe, or a memory. When it found one that didn’t match, it paused.

And the box disappeared.

Just vanished. Gone from the shelf.

The entity moved on to the next box. Same process. Look, compare, sometimes the box would disappear.

By the end of the night, several products were missing from the shelves. Not stolen. Just… removed from existence.

Marcus checked the inventory the next day.

“Forty-three items missing,” he said. “But the security footage doesn’t show anyone taking them. They’re just gone.”

“The entities took them,” I said.

“No,” Marcus said. “That’s not possible. You can’t take something if you’re not fully in this dimension.”

“Then what happened to them?”

“I don’t know,” Marcus said. “But this is getting worse. And I think I need to tell you something.”

He took me to his office and pulled up some old files on his computer.

“This store opened in 1987,” he said. “It was originally an Acme supermarket. Then it became SaveMart in 1995. And every manager since then has reported the same thing. After a few months of operation, entities start appearing in the store after hours. They observe. They catalog. And then they start removing products.”

“Removing them where?” I asked.

“That’s the question,” Marcus said. “I think they’re removing them from our store to put them in theirs.”

“Their store?”

“There’s another SaveMart,” Marcus said. “Somewhere else. Somewhere that’s identical to ours, but not quite real. And the entities are trying to make our store match theirs. Or maybe they’re trying to make theirs match ours. I don’t know. But every manager who’s worked here has noticed that products appear sometimes too. Items on shelves that we never stocked. Items that shouldn’t exist.”

I thought about this.

“So the store is… what? Being synchronized with another version of itself?”

“Maybe,” Marcus said. “Or maybe the entities are collecting products for some kind of archive. A catalog of everything that exists in a supermarket. Everything that’s ever been sold. Everything that could theoretically be available.”

“That’s insane,” I said.

“Yes,” Marcus agreed. “But it’s been happening for decades. And there’s nothing we can do to stop it.”

Over the next few weeks, I watched the process accelerate.

The entities came every night. They removed more products. Sometimes new products appeared to replace what they’d taken. Sometimes the shelves just went empty.

The customers started to notice.

“Why don’t you have this brand anymore?” they’d ask, pointing to a gap on a shelf.

“Inventory issues,” I’d say. But I knew the truth. The entities had taken it.

Robert quit after a month.

“I can’t do this anymore,” he said. “I can’t work in a store that’s slowly being replaced by something else.”

His replacement lasted two weeks.

The next one didn’t even last that long.

I stayed. I don’t know why. Maybe because I had nowhere else to go. Maybe because I was curious about what would happen. Maybe because I felt like if I left, the store would be completely taken over by the entities and there would be no human presence left to witness it.

Marcus started acting strange. He would stand in the aisles for hours, just watching the entities work. Sometimes I’d find him writing notes about what products were missing, what products had appeared, trying to find a pattern.

“I think I understand it,” he said one night. “I think they’re not just cataloging. I think they’re trying to create a perfect store. A store that contains every product that has ever existed and every product that will ever exist. And they’re using our store as a template. They’re removing products that don’t fit and adding products that do.”

“Why?” I asked.

“Because that’s what they do,” Marcus said. “That’s their purpose. Somewhere, there’s a being or a system that collects stores. That maintains them. That keeps them pristine and complete. And these entities are the workers.”

He pointed to one of them examining the produce section.

“What happens when the store is complete?” I asked.

“I don’t know,” Marcus said. “Maybe they move on to the next store. Maybe they stop coming. Maybe the store becomes theirs and we get moved to a different SaveMart.”

That possibility terrified me more than anything else had.

The idea that I might wake up one day and find myself working in a different store, with no memory of how I got there, surrounded by products that shouldn’t exist.

Last week, Marcus didn’t come in for his shift.

He called in and said he’d been reassigned to a different location.

“Better opportunity,” he said, but his voice was hollow.

I was alone with Robert again—a new Robert, the third or fourth one I’d worked with in the past two months.

And the entities kept coming.

They’ve removed so many products now that entire aisles are empty. Gaps everywhere. Shelves that are half-full. The store is starting to look like a set for a post-apocalyptic movie.

But new products keep appearing too. Products I don’t recognize. Brands that don’t exist. Items with labels in languages I’ve never seen.

The customers are complaining more. Management is talking about restocking issues and supply chain problems. But I know the truth.

The store is being transformed.

And I’m the only one left who remembers what it used to look like.

Last night, I tried to write down a list of products that were missing. I got to fifty-seven and gave up. There are too many.

And tonight, as I’m working, I’m noticing something new.

The entities are starting to look different.

They’re becoming more solid. More real. Their movements are becoming more natural. They’re starting to look less like constructs and more like actual people.

And I’m noticing something about myself too.

My hands are getting blurry at the edges, like I’m becoming less real.

I think the transformation goes both ways.

I think as the store becomes more like their store, the workers—the human workers—become less like ourselves.

I think by the time the store is complete, I won’t be here anymore.

I’ll have been replaced by another entity.

And I won’t even remember being human.

Tonight, I’m clocking in for what might be my last shift.

And I’m looking at the shelves, trying to memorize what’s left of the store I used to know.

Because soon, this SaveMart will be perfect.

And I’ll be the one cataloging the products.

The one reading the labels.

The one removing things that don’t fit.

The one building the store that was always supposed to exist.

And somewhere, in another dimension, another stocking clerk will watch me arrive.

And they’ll know exactly what’s happening.

Just like I know now.​​​​​​​​​​​​​​​​