[A/N]

I originally was going to post one single chapter, but it ended up become a big long, so I decided to split this part up in two to three chapters.

Reviews are greatly appreciated. Enjoy!


After the pair had finished the test chambers, they retreated to their rooms again.

And, once again, the human found herself being bored. She wasn't used to being tired, the adrenal vapours usually took care of that.

She resorted to doing the only thing she was allowing herself to do, while she rested. Think. She simply thought back to what happened before.

One of the first things that popped into her mind, gave her an… idea. The android had done something she'd be happy to repay. A smile formed on her features, as the thought this one out.

Let the prank wars, begin.


The girl found herself in the manufacturing department of Aperture. She'd gotten an idea that might just work. She spent a good half an hour walking around, searching for one particular area.

She stood in front of another vault-like door, and she watched as it opened itself upon her arrival. She walked through, then stopped. Another wide grin settled on her face.

PORTAL DEVICE MANIFACTURING

She went around the corner. The girl walked onto a catwalk. In front of her, floating, was something she couldn't quite describe.

It was dark, astoundingly dark, even the definition of black couldn't convey how dark it was. Even though the room was well-lit, it still was completely pitch-black.

The catwalk ran in a circle around the thing, with eight big machines facing it. They looked like big versions of cores with a big lens-thing instead of an optic. They beamed something vaguely representing an excursion funnel.

She looked at the label on the side of one of the big, round machines.

APERTURE SCIENCE HEAVY DUTY GRAVITY FIELD EMITTER

Under it was another label.

POWER LEVEL | BLACK HOLE

Why was there a black hole? And why was it in the portal device manufacturing area? She decided to just go on.

Why wouldn't there be a black hole in Aperture? The test subject thought to herself.

She was a few feet away from the next door, as loud sirens went off.

Warning: Black hole compacting sequence initiated. Please leave the Black hole compaction chamber.

The girl quickly sprinted towards the vault-door, which closed behind her. She walked into an observation room, adjacent to the hallway she was in.

She saw as the 'gravity field emitters' went into overdrive, working away at the now shrinking black hole. Once it reached the size of about a tennis ball, many robotic arms came from the floor.

The test subject simply watched as a portal gun was assembled in front of her around the now tiny black hole. The newly made portal device was surrounded by a cardboard box, showing the portal gun, along with the aperture science logo.

The sirens cut off, and the gravity field emitters went orange. A quickly growing black hole emerged in the center.

So this is how they're made then. Interesting.

The girl turned to the wall behind her. On it was a poster, showing the individual components of the portal device. And indeed, in the tube was a relatively small black spot, marked with 'Miniature black hole'.

She stared at the poster for a while, then turned away. Besides, she had other things to do.

She exited the observation room, and went further along the hallway.

There were a lot of rooms. An evaluation room, were portal guns were unboxed, tested, and carried further along to the next room. There were a lot of scanners, as well as something that checked if the black hole was steadily held in place, amongst other things.

On the end of the hallway was another vault-like door, with a sign above it.

PORTAL DEVICE STORAGE 3-A

The girl walked up to the door, which automatically opened with her proximity, and walked through. On the other side was a big, big room. There were shelves upon shelves with neatly stacked boxes, all with portal devices within them.

There were claws suspended from the ceiling, all dormant, and unmoving.

She grabbed the first box in her reach, and quickly worked to open it. A brand new looking portal device powered up in her hands. She shot two portals onto a wall, and inspected the colours.

They looked orange and blue, but they were a bit off, different from hers all those days ago. Portal guns of the same colours would interfere with each other, so it made sense.

Satisfied, the test subject walked back out the door.

Now for the second part of the plan, she thought, smiling.