"Aliens? But aliens aren't supposed to be real!"

The doctor stood up and began examining the other windows. Each time he did a face would appear. "Well they do, and I should know since I happen to be one."

"Where's your spaceship?"

"Parked in your kitchen. Sorry about that."

Finn looked confused, then peaked back in his kitchen. The big blue box still stood there.

"That's a spaceship? Lame."

The Doctor spun around, offended. "Excuse me. I'll have you know that my TARDIS is not "lame". It is the most un-lame device ever created."

"It looks like a telephone box."

"Well, yes, that's because it's broken. I keep forgetting to fix that!" The tapping noise continued, louder this time. "Alright Finn, let's simply cut to the chase. Why are they tapping?"

"I dunno. They're aliens."

"Well lots of aliens tap on things. I tap. Sontarans tap. Daleks...well, they have the capability to tap. Think Finn. Why would you tap on the window?"

"To get somebody's attention?"

"Right! But they've got our attention. Haven't you lot?" The Doctor called. The two waited for just a moment before faces appeared in all the windows. Even Finn could figure out the answer: yes.

"So! Why else does somebody tap?"

"They...um..." Finn screwed his face up as he thought about it. "They...want to be let inside?"

"Yes! Good idea. So we should probably do that." The Doctor rushed over to the door. Finn realized what eh was about to do and ran passed him, standing in front of the door.

"You can't just open the door and let aliens in!"

"Well that's what they want. Besides, they don't seem angry."

"But they made scary faces!"

"Well I can make a scary face too. Watch!" The doctor stuck out his tongue and crossed his eyes. Finn sighed.

"Mom said that I can't let any strangers in. I'm already going to be in trouble if she finds you here. What will she think when she sees rain aliens?"

"Come now Finn, if they're dangerous then we can handle them. You're a strapping young lad of, what, 15?"

"I'm 12."

"12? Blimey you're tall. Is your mother a giraffe?" The Doctor went up to Finn and looked out the peephole. Not that there was anything to be see, just rain and water.

"Look, we'll only open the door a little bit. That way if they turn out to be dangerous or angry we can slam it closed again. Alright?"

Finn considered it for a moment. "Alright."

"Goody. Now then," The Doctor gripped the door handle and opened the door about half a foot wide. Finn had pressed himself against the wall on the other side of the door, and carefully peeked out through the frame. There wasn't anything there as far as he could tell. In fact, he couldn't even see the rain. The Doctor also peeked his head around the door.

"See anything?"

"No."

The Doctor opened the door wider, and after a moment all the way. Finn stood by his side.

"Maybe they didn't -"

Finn was cut off when a monstrous head dropped down from above the doorway. It looked like a dinosaur, but was completely composed of water. When it roared, all that came out was a gurgling, bubbling sound. Finn and the Doctor both screamed, and the doctor slammed the door.

The creature was faster, able to get part of it's head in before being cut off by the doorway. An arm and part of a jaw hung suspended in the air for a brief moment before losing form and splashing to the ground. Finn looked in shock.

"I told you they were scary aliens!"

"Well how was I supposed to knwo they would do that! I've never fought water before! Well, once before, but that was Martian water. I would like to imagine there's a difference." Something dawned on the Doctor's face, and he pulled out his Sonic Screwdriver, pointed it at Finn, and waved it at him a few times.

"What are you doing?"

"Making sure you're not a zombie."

Finn's eyes went wide with fear. "A z-zombie?"

The Doctor checked the read out on the screwdriver. "Nope, not a zombie. Good thing too. I was afraid the Flood were here."

Hearing this, Finn instantly perked up. "Flood? Like in Halo?"

"No. Different Flood. I never understood why they called those Flood Flood anyways. They don't look like water. The actual Flood are actual water. Well, in a manner of speaking." The Doctor tapped his screwdriver against his chin. "So, no flood, and nothing wrong with you, so it's not a viral creature. Hrm."

The Doctor turned and was about to point his screwdriver at the ground when he noticed something. "Finn, what happened to that puddle of water from before?"

Finn looked down at the ground, then around the rest of the foyer. "Uh...I don't know...maybe it dried up?"

"I don't think this is the kind of water that dries up."

A drop of water fell on the ground where they were looking. The two of them slowly raised there eyes, met each other's gaze, then continued to go up. Above them, impossibly suspended from the ceiling, was the puddle of water.

Spread out, it was about the size of a pizza, or at least that was the closest size estimate Finn could imagine. The water stood there, quivering slightly, before dropping onto the ground and reshaping itself into a vaguely quadrupedal form. And then it lunged at the Doctor.

The force of the blow knocked the Doctor over, and he cried out in surprise. "Get off me you...you...mutt?" he said as he struggled with the alien. He tried to pushed it off but his hands kept on plunging into the water instead of forcing the creature away. "Finn! A little help?"

Finn tried to grab or kick the creature, but all that happened was his arms and legs splashing through its body. Oddly enough, his hands and feet didn't get wet. "Wait right here!" he said before running into the kitchen.

"Wasn't planning on moving!" The Doctor frantically replied. The water creature was slowly trying to move toward his face, and the Doctor realized that it intended to drown him. All he could do was wriggle backwards, but the creature kept on writhing and shifting its form to get at him.

In the kitchen, Finn had his head under the sink and was digging through the bottles of cleaning supplies and rags, desperately searching for - aha! The big sponge that his mom used when there were really big spills. He grabbed on to it tightly and ran back to the living room. What he found was the doctor with half of a rain alien stuffed down his throat, trying to close his mouth on it while it tried to pull his fingers away from his nostrils with aquatic tendrils. Finn didn't waste any time slamming the sponge onto the Doctors face. It worked just as he had hoped - the creature got dragged into the sponge just like regular water.

The Doctor lay for a few moments panting, before looking up at Finn. "Well. That was unexpected." He slowly and shakily got up to his feet and straightened out his clothes. "Right, let's see here. I'm not damp." He patted himself where the rain creature had been. "That's definitely odd."

Finn just stared at the Doctor, then at the sponge. "This is all really weird."

The Doctor took the sponge from Finn. "Well it's a weird universe, you see. Lot's of weird things wriggling about in nooks and crannies and waiting for somebody to step on them on suck them into a sponge. Alright my watery chap, let's see what's up with you?" The Doctor held the sponge aloft, and pointed the screwdriver at it. After a brief moment he checked the readout. "Huh."

"What? What's 'huh'?"

"Huh, as in 'huh, that's odd.' This appears to be regular water."

Finn looked at the Doctor in confusion. "But you said it was alien water!"

"Well I guess I was wrong."

"But normal water doesn't run upwards or turn into dinosaurs or try to drown people!"

"Well I know that! Now shush, I'm trying to think." The Doctor looked at the sponge quizzically, and the sponge smacked him in the face.

He dropped it in surprise. As soon as it was on the floor the sponge began to wriggle around on the ground. Finn cried out in surprise.

"It's moving! It's still moving!"

"It punched me!"

"Doctor, do something!"

"I've just been punched by a sponge!"

"Doctor!"

"Alright, fine." The Doctor chased after the sponge. It was surprisingly difficult; the cleaning item was rather agile, twisting and turning out of the man's reach. It was headed towards the door, that much was certain, but before it could reach it the Doctor managed to grab a hold of it again. It continued to struggle, and the time lord nearly lost it several times.

"Okay Finn, you need to open the freezer for me!"

"Why? What's in the freezer?"

The Doctor just levelled a frustrated look at Finn. "Really Finn? Really?"

Finn paused for a moment before he managed to connect the dots. "Oh! Right!" he ran to the kitchen and opened the freezer door, and the Doctor followed soon after and chucked the sponge into the appliance before slamming the door closed.

"There. Now we can -"

There was a loud smacking on the freezer door, and the Doctor and Finn immediately braced themselves against it. The sound continued, becoming louder and...harder. Eventually there was one last loud thud before they stopped.

"Is it...frozen?"

"I should think so yes. But now we have to focus on a more important issue."

"What's that?"

"It knows what doors are for now."

*TAP TAP TAP*