The dark cave

The cave was dark.
It had always been dark, for as long as Newt could remember. And his memory was excellent.
Newt scurried around the cave, dodging around boulders with the ease of long practice.
Newt had never known anything other than the dark. Sure, he'd heard the bats chitter about stars, and a couple of rats complain about sunlight, but Newt didn't know what those were.
Stars? Sunlight? Why should he care about sure things, when all he needed was here in the cave?
So Newt was content to go about his day like all the days before.
At least, until he saw the thing.
It was an odd thing, moving about the cave like it wasn't sure where to go.
What was even stranger was that wherever the thing went, other things appeared. A strange lumpy thing where Newt knew a boulder should be, a small creature that scurried away from the thing exactly as Newt knew a rat would.
What's more, another new thing seemed to be attached to the first. Walking about on two legs, it held the first new thing out from it.
The thing on two legs pointed the odd thing towards Newt.
It froze, then seemed to find its voice.
"Dra- dragon!" It screamed, dropping the odd thing as it turned and ran.
The odd thing gave a sputtering sound, and died.
Curious, Newt followed after the two leg thing. He easily avoided the boulders that that two leg thing kept hitting, and wondered why it didn't try to avoid them.
After a while, Newt started wondering if the two leg thing was going to stop running. Weren't there more exciting things it could do?
Then quite suddenly, the two leg creature hit the wall. Newt could have told it the wall was there, for the wall had always been there. He didn't know why the creature was continuing to hit the wall with its upper limbs.
At least, not until a loud crack sounded from the wall.
A chunk of way swung outwards, and a blinding, burning thing pierced Newt's eyes.
He let out a roar and twisted his head away, trying to hide from the burning thing.
It seemed the opposite of dark, and he did not like it.
He stumbled backwards, and heard the two leg thing head through the missing chunk of wall. Why would it head toward the blinding thing? Wasn't it getting burned?
There was another crack, and the horrible thing was gone.
Newt blinked and shook his head, strange spots filling his vision.
He moved toward the wall, and checked that it was safely solid once more.
Whatever had just happened, he hoped it never would happen again.
For he liked the dark, and the peaceful quiet of the cave.