"Are you sure you don't want to try it?" the Doctor asked Elise. He was currently holding Amy out of the TARDIS by her ankle.

Elise shook her head.

"Come on, Pond", he said pulling her inside, "Now do you believe me?"

"Okay, your box is a spaceship. It's really, really a spaceship. We are in space! What are we breathing?"

"I've extended the air shell. We're fine".

The Doctor turned to Elise. "You're scared, right?"

Elise nodded.

"That's okay. It's okay to be scared. But here's the thing, as long as you've got me nothing bad will ever happen to you". He put his hand out and Elise placed her small one in his. He slowly walked forward and Elise floated out into space.

Her hearts were beating out of her chest and she grabbed onto the Doctor's wrist with her other hand. She kept her blue eyes on his green ones as she floated there.

He finally smiled and pulled her back in, kissing her forehead. "Good girl. My brave, brave girl". The Doctor looked out the door and saw a city floating there. "Now that's interesting. Twenty ninth century. Solar flares roast the earth, and the entire human race packs its bags and moves out till the weather improves. Whole nations".

Elise and the Doctor ran back to console as the door closed.

"Doctor?" Amy asked.

"Migrating to the stars".

"Doctor?"

"Isn't that amazing?"

"Doctor!"

The Doctor ran over to the doors and opened them.

Amy was hanging onto the side of the TARDIS.

"Well, come on. I've found us a spaceship", he said. The Doctor pulled her back inside and they observed the spaceship from a screen. "This is the United Kingdom of Britain and Northern Ireland. All of it, bolted together and floating in the sky. Starship UK. It's Britain, but metal. That's not just a ship, that's an idea. That's a whole country, living and laughing and shopping. Searching the stars for a new home".

The Doctor sounded kinda sad, so Elise wrapped her small hand around his and he smiled down at her in thanks.

"Can we go out and see?" Amy asked.

"Course we can. But first, there's a thing".

"A thing?"

"An important thing. In fact, Thing One. We are observers only". He held a magnifying glass up to his eyes and then put it down. "That's the one rule I've always stuck to in all my travels. I never get involved in the affairs of other peoples or planets".

Elise hadn't known the Doctor for long, but she had a strong suspicion that he was lying.

A video of a girl crying popped up on the monitor.

"Ooo, that's interesting", the Doctor said.

"So we're like a wildlife documentary, yeah? Because if they see a wounded little cub or something, they can't just save it, they've got to keep filming and let it die", Amy said.

The Doctor and Elise slipped out of the TARDIS and ran over to the little girl. The Doctor stopped to talk to her, but she ran off. He turned back to the TARDIS and motioned for Amy to join them.

"Welcome to London Market. You are being monitored".

Amy came out of the TARDIS. "I'm in the future. Like hundreds of years in the future. I've been dead for centuries".

"Oh, lovely. You're a cheery one. Never mind dead, look at this place. Isn't it wrong?" the Doctor asked as they started to explore the marketplace.

"What's wrong?"

"Come on, use your eyes. Notice everything. What's wrong with this picture?"

"Is it the bicycles? Bit unusual on a spaceship, bicycles".

"Says the girl in the nightie".

"Oh my God, I'm in my nightie!"

Elise giggled at the embarrassment in Amy's voice.

The ginger looked down at her. "Oi. Hush you".

"Now, come on, look around you. Actually look", the Doctor told her.

"London Market is a crime-free zone".

"Life on a giant starship. Back to basics. Bicycles, washing lines, wind-up street lamps. But look closer. Secrets and shadows, lives led in fear. Society bent out of shape, on the brink of collapse. A police state. Excuse me". The Doctor ran over to a table and grabbed a glass of water.

"What are you doing?" the man sitting at the table asked him.

The Doctor set it on the floor and looked at it for a moment before returning it to the table.

Wait. Why wasn't the water moving? If they were on a ship, wouldn't there be vibrations from the engines?

The Doctor looked down at the small Timelord. He could practically see her little brain working it out. She would be a clever one, he could tell.

"Sorry. Checking all the water in this area. There's an escaped fish. Where was I?"

"Why did you just do that with the water?" Amy asked.

"Don't know. I think a lot. It's hard to keep track. Now, police state. Do you see it yet?"

"Where?"

The Doctor snapped his fingers and pointed to the little girl from earlier. "There". He walked over to the little girl, leaving Elise with Amy. Eventually the Doctor walked back over to them and they sat on a red bench, watching the girl.

"One little girl crying. So?" Amy asked him.

"Crying silently. I mean, children cry because they want attention, because they're hurt or afraid. But when they cry silently, it's because they just can't stop. Any parent knows that".

"Are you a parent? I mean, besides to Elise".

The Doctor was silent for a moment before he started talking again, completely avoiding the question. "Hundreds of parents walking past who spot her and not one of them's asking her what's wrong, which means they already know, and it's something they don't talk about. Secrets. They're not helping her, so it's something they're afraid of. Shadows, whatever they're afraid of, it's nowhere to be seen, which means it's everywhere. Police state".

The Doctor and Amy looked back and saw she was gone.

"Where'd she go?" Amy asked.

"Deck two oh seven. Apple Sesame block, dwelling 54A. You're looking for Mandy Tanner", the Doctor told her. He pulled out a wallet. "Oh, er, this fell out of her pocket when I accidentally bumped into her". He handed the wallet to Amy. "Took me four goes. Ask her about those things. The smiling fellows in the booths. They're everywhere".

"But they're just things".

"They're clean. Everything else here is all battered and filthy. Look at this place. But no one's laid a finger on those booths. Not a footprint within two feet of them. Look. Ask Mandy, why are people scared of the things in the booths?"

"No, hang on. What do I do? I don't know what I'm doing here and I'm not even dressed".

"It's this or Leadworth. What do you think? Let's see. What will Amy Pond choose?"

Amy looked at him for a moment and you could see her decision on her face.

"Ha ha, gotcha. Meet me back here in half an hour".

"What are you going to do?"

"What I always do".

The Doctor stood up. "Stay out of trouble. Badly". He hopped over the back of the bench and picked Elise up, setting her on his shoulders.

"So is this how it works, Doctor? You never interfere in the affairs of other peoples or planets, unless there's children crying?" Amy asked.

"Yes".

The Doctor climbed down the ladder and set Elise on the ground. "Really need to come up with a better way to carry you", he muttered. He ran his hands along the walls and watched as Elise did the same. "Can't be. Can you feel it?" he asked her.

Elise nodded.

He pulled out his screwdriver and scanned the wall.

Elise noticed a glass of water on the floor, just like the Doctor had done upstairs, and tugged on his jacket.

He got down on the floor on his stomach and looked the water that still wasn't moving.

A woman came towards them with a mask on her face and dressed in a red cape. "The impossible truth in a glass of water. Not many people see it. But you do, don't you, Doctor?" she asked.

"You know me?"

"Keep your voice down. They're everywhere. Tell me what you see in the glass".

"Who says I see anything?"

"Don't waste time. At the marketplace, you placed a glass of water on the floor, looked at it, then came straight here to the engine room. Why?"

"No engine vibration on deck. Ship this size, engine this big, you'd feel it. The water would move. So, we'd thought we'd take a look". He walked over to a control box and opened it. "It doesn't make sense. These power couplings, they're not connected. Look. Look, they're dummies, see?" He knocked on the wall next. "And behind this wall, nothing. It's hollow. If I didn't know better, I'd say there was..."

"No engine at all", they spoke in unison.

"But it's working. This ship is traveling through space. I saw it", the Doctor told her.

"The impossible truth, Doctor. We're traveling among the stars in a spaceship that could never fly".

"How?"

"I don't know. There's a darkness at the heart of this nation. It threatens every one of us. Help us, Doctor. You're our only hope. Your friend is safe. This will take you to her. Now go, quickly!" The woman handed the Doctor a tracking device and turned to leave.

"Who are you? How do I find you again?" the Doctor asked her.

"I am Liz Ten, and I will find you".

The Doctor looked down at Elise and then the tracking device in his hand. "Come on. We have to find Amy", he told her.

According to the device, she was being held in a room.

Outside the door was Mandy, the little girl.

The Doctor soniced the lock and burst in.

A video recording of Amy was playing on a screen. "Listen to me. This isn't a trick. This is for real".

"Amy?" the Doctor asked.

"You've got to find the Doctor". Amy turned off the video.

"What have you done?" The Doctor scanned a device hanging from the ceiling. "Yeah, your basic memory wipe job. Must have erased about twenty minutes".

"But why would I choose to forget?"

"Because everyone does. Everyone chooses the Forget button", Mandy told her.

"Did you?" the Doctor asked.

"I'm not eligible to vote yet. I'm twelve. Any time after you're sixteen, you're allowed to the see the film and make your choice. And then once every five years".

"And once every five years, everyone chooses to forget what they've learned. Democracy in action".

"How do you not know about this? Are you Scottish too?"

"Oh, I'm way worse than Scottish. I can't even see the movie. Won't play for me".

"It played for me", Amy told him.

"The difference being the computer doesn't accept me as human".

"Why not? You look human".

"No, you look Time Lord. We came first".

Oh, well that answered one of Elise's many questions.

"So there are other Time Lords, yeah? Besides you and Elise", Amy said.

The Doctor looked down at Elise. He needed to be very careful what he said in front of her. "No. There were, but there aren't...Just us now. Long story. There was a bad day. Bad stuff happened. And you know what? I'd love to forget it all, every last bit of it, but I don't. Not ever. Because this is what I do, every time, every day, every second. This. Hold tight. We're bringing down the government". The Doctor slammed his fist down on the "protest" button.

The door shut, trapping him, Elise, and Amy inside.

The Smiler in the booth became a Scowler and the floor opened up.

The Doctor picked Elise up, who hid her face in his neck. "Say wheee!"

Amy and Elise screamed as they fell down the chute.