The Doctor left the safety of the TARDIS to chase after Amy, who had run to explore her first alien world. As soon as he stepped outside the blue box, the Doctor was met by a scorching heat that caused immediate perspiration. The sky was an emerald colour, with no clouds or precipitation in sight. Twin suns shone down on the planet surface, baking the rocky floor in a haze of heat-waves. Removing his jacket and loosening his bow-tie, the Doctor joined Amy, whose energy had been sapped by the intense temperature. He put his hands on her shoulders and turned her to face him.

"I know this is all new to you, but I have three very specific rules for space travel, Miss Pond. The first rule… I go first, to check the surroundings for any threats. Number two, you listen to my every word, it could be very important."

The Doctor's tone of voice reminded Amy of when teachers used to tell her off at school, usually for not listening to their lessons, instead choosing to draw doodles of the raggedy Doctor-man.

"And the last rule, Miss Pond… always… always have fun."

Amy smiled and hugged the un-expecting Doctor; her happiness causing her to lift the Doctor off the floor. He laughed, brushed his shoulders, before taking her hand to enthusiastically begin their first alien exploration.

The TARDIS had landed in the middle-of-nowhere; miles of land surrounded it with no sign of life. The Doctor was using his sonic screwdriver to track the signal that had attracted them to the planet in the first place, following the beeps of the device in the direction of the signal. They started to move across the large desert-like area, slowly but surely. The heat wasn't letting up and after a solid period of walking, dehydration and fatigue had started to set in. They were forced to retreat into a small cavern, built in the surface of a large cliff-face that stood in their way. Tired and thirsty, they stumbled onto the floor of the cavern to enjoy the shade. The Doctor removed a bottle of water from his jacket to hand to Amy, who gulped at the liquid like a horse at a trough.

"Doctor? You said your last rule of space travel was 'always have fun'? Well, this is not fun."

"What do you mean, this isn't fun? Are you or are you not on an alien planet?"

"Yeah sure, but it doesn't look much like an alien planet. I was expecting all of those things that you mentioned, like alien life and buildings and stuff."

"Oh no, not on this planet. It's a designated Category 1 planet, meaning that there is very little to no life. That's why I am so interested in this signal. Someone or something is trying to get our attention. And that would be impossible."

Amy looked confused.

"Wait, have you been to this planet before then, because you seem to know a lot about it."

"No… but I know of it. It's called Inculta, taken from what you know as the Latin language. It translates as 'desert', for quite obvious reasons. All in all, a very boring and tedious world."

"From what I know? What's wrong with Latin?"

"Latin is alien."

Again, Amy had to double-check what the Doctor had just said.

"Latin is alien?"

"Rule number two, Amelia… listen."

The Doctor motioned to his ears, pulling them away from his head. Startled by the Doctor's revelation, Amy went into complete silence.

"Right, we need to get going again. That signal won't last forever, and I think, it's starting to die right now."

Once again, the Doctor and Amy found themselves walking in the smoldering heat. However, this time, they were scaling the cliff-face, trying to get to the peak in their mission to track the signal. It was difficult and the dusty surface made it harder to grip. They were also forced to climb up fragile ledges that felt like they would crumble under the weight of a person. Eventually, the team completed their ascent; Amy was the first to get to the top, with the Doctor close behind. Amy stood at the top of the cliff face, with her hand covering her eyes so she could look into the distance.

"Hey, Doctor?"

"What?" said the Doctor, who was adjusting his shoe laces.

"You said that there was no life on this planet, right?"

"Yep. None. Nada. Nothing."

"Well, I see life."

Amy's words shook the Doctor in a combination of intrigue, shock and excitement. He sprang from his seat on the edge of the cliff-face to join Amy. And she was right. Right in front of them, there was a large settlement of shiny metals that reflected the light of the twin suns, in the way that a mirror would. Surrounding the settlement was a huge wall, perhaps 50-60 feet in height. In the middle of the settlement, there was an even bigger high-rise tower with a pointed peak, overlooking the planet for hundreds of miles in every direction.

"That is… completely impossible. Why have I never heard of a settlement of this size? I mean, it's just a Category 1. No-one is supposed to be here. This is wrong. Everything about this just screams wrong to me."

"Look at it this way, Doctor. At least we know where your signal is coming from."

He forced a smile, hiding his discomfort about their situation. Amy had already begun to make her way down the opposite side of the cliff-face, whilst the Doctor faced the impossible.

-----

Through the lens of his binoculars, the Guardian watched two people, approaching the city walls. One of them, a red-headed girl in red clothing, walked slightly ahead of a younger man, who appeared cautious and tense. The very sight of people on the outside forced the Guardian to report his findings. Leaving their post, the Guardian had to make their way down the familiar corridors of the tower and into a lift at the end. The lift doors closed after a delay, before the Guardian punched the code into a panel on the wall. The lift rapidly ascended and pinged at its destination, as the Guardian hurriedly left the elevator and power-walked down another long corridor, with golden walls and marble floors. Two more Guardians opened the oak double doors to let the Guardian onto a balcony on the point of the power.

"Honoured leader, sir. We have people outside the kingdom walls."

Sitting in a decayed leather chair, the leader stayed completely still; his arms resting on the sides of the chair.

"Do we know them, Guardian?"

"They are unknowns, sir."

The leader lifted his right arm and motioned to the Guardian.

"Go my Guardian. Bring them in".

"Yes, sir."

The Guardian bowed their head, before leaving at the same speed they entered. The Guardian tapped several buttons on a device on their wrist, before holding it to the mouthpiece of their black helmet.

"Initiate Code 6060… It is our honoured leader's wishes."

The Guardian ended communication and adjusted the laser rifle in their hands.