"Behold, Rio!" the Doctor said throwing open the TARDIS doors.

They stepped out into a graveyard.

"Nu-uh", Amy told him.

"Not really getting the sunshine carnival vibe", Rory added.

"No? Ooo, feel that, though. What's that?" the Doctor asked, jumping up and down, "Ground feels strange. Just me. Wait. That's weird".

Elise did the same, but couldn't feel anything, but she did notice the patches of blue grass around them.

"What's weird?" Rory asked.

"Doctor, stop trying to distract us. We're in the wrong place. Doctor, it's freezing and I've dressed for Rio. We are not stopping here", Amy told him.

The Doctor ran around to the other side of the church, dragging Elise with him. At Amy's insistence, the Doctor left the harness in the TARDIS allowing Elise a little bit more independence. But it would be a while before he let her out of his sight.

"Doctor. You listening to me? It's a graveyard. You promised me a beach!"

The Doctor knelt down beside a patch of blue grass and pulled out a couple of blades. "Blue grass. Patches of it all around the graveyard. So, Earth, 2020-ish, ten years in your future, wrong continent for Rio, I'll admit, but it's not a massive overshoot".

"Why are those people waving at us?" Amy asked.

Across the hill from them stood two people.

"Can't be", the Doctor said.

Rory waved back at them.

"Don't", Amy told him.

The Doctor pulled out a pair of binoculars. "It is. It's you two".

"No, we're here. How can we be up there?" Rory asked.

"Ten years in your future. Come to relive past glories, I'd imagine. Humans, you're so nostalgic".

"We're still together in ten years?" Amy asked.

"No need to sound so surprised", Rory told her.

"Hey, let's go and talk to them. We can say hi to future us. How cool is that?"

"Er, no, best not. Really best not. These things get complicated very quickly, and oh look. Big mining thing. Oh, I love a big mining thing. See, way better than Rio. Rio doesn't have a big mining thing", the Doctor said.

"We're not going to have a look, are we?" Amy asked.

"Let's go and have a look. Come on, you two, let's see what they're doing". The Doctor and Elise started down the hill towards the mining machine.

"Doctor!" Amy called after them.

When they reached the bottom of the hill, they found gates surrounding the mine.

"Restricted access. No unauthorized personnel", the Doctor read, "Hmm". He pulled out his sonic screwdriver and pointed it at the lock.

It sparked and opened.

"That is breaking and entering!" Amy told him.

"What did I break? Sonicing and entering. Totally different". The Doctor tossed the lock aside and Amy entered.

"Come on, then!"

"You're sure Rory'll catch us up?" he asked.

They entered the mining building and started to walk through a tunnel.

"What about now? Can you feel it now?" the Doctor asked. He looked down at Elise who shook her head. He sighed and knelt down in front of her. "Concentrate. Feel the ground beneath your feet. Tap into it".

Elise closed her eyes and focused. Then it hit her. She could feel everything. The turn of the earth beneath her feet, the feeling of time slowly ticking by. Her eyes snapped open and met the Doctor's.

He smiled and kissed her forehead.

"What are you on about?" Amy asked.

"The ground doesn't feel like it should", he told her.

"It's ten years in the future. Maybe how this ground feels is how it always feels".

"Good thought, but no, it doesn't".

There was a whirring noise.

"Hear that, drill in start-up mode. Afterwaves of a recent seismological shift and blue grass". The Doctor stuck the grass in his mouth, chewed for a second and spit it out.

"Oh, please. Have you always been this disgusting?" Amy asked.

"No, that's recent. What's in..."

They entered a store room.

"Here? Hello".

"Who are you? What're you doing here?" an Indian lady asked them. She looked at Amy. "And what're you wearing?"

Amy rolled her eyes. "I dressed for Rio".

The Doctor pulled out his psychic paper and flashed it at the woman. "Ministry of Drills, Earth and Science. New Ministry, quite big, just merged. It's lot of responsibility on our shoulders. Don't like to talk about it. What are you doing?"

"None of your business".

The Doctor walked up to a couple of screens with readings on them. "Where are you getting these readings from?"

"Under the soil", the woman said.

A man entered the room as the Doctor knelt down to run some soil through his fingers. "The drill's up and running again. What's going on? Who are these people?"

"Amy, the Doctor, Elise", Amy introduced, "We're not staying, are we, Doctor?"

"Why's there a big patch of earth in the middle of your floor?" the Doctor asked.

"We don't know. It just appeared overnight", the woman said.

"Good. Right. You all need to get out of here very fast". The Doctor started typing.

"Why?"

"What's your name?"

"Nasreen Chaudhry".

"Look at the screens, Nasreen. Look at your readings. It's moving".

The man came over to them as Amy and Elise watched mist start to rise from the hole in the ground.

"What is?" Nasreen asked.

"Doctor, this steam, is that a good thing?" Amy asked.

He turned to look at it. "Shouldn't think so. It's shifting when it shouldn't be shifting".

"What shouldn't?" Nasreen asked, frustrated that the Doctor wasn't answering any of her questions.

The room started to shake and the Doctor grabbed Elise, pulling her away from the hole. "The ground, the soil, the earth, moving. But how? Why?"

"Earthquake?" Amy asked.

"What's going on?" the man asked.

"Doubt it, because it's only happening under this room", the Doctor said.

Five more holes appeared in the floor.

"It knows we're here. It's attacking. The ground's attacking us", the Doctor said.

"No, no that's not possible", Nasreen told him.

"Under the circumstances, I'd suggest, run!"

The Doctor, Elise, and Nasreen ran to the other side of the room as more holes opened up.

One of them grabbed the man.

"Tony!" Nasreen yelled.

"Stay back, Amy. Stay away from the earth", the Doctor told her.

Amy didn't listen and ran over to try and help him. "It's okay", Amy told him. A hole opened up and grabbed Amy by the feet. "It's pulling me down!"

"Amy!" The Doctor ran forward to try and help her.

"Doctor, help me. Something's got me".

He grabbed Amy's hand as he felt Elise grab a hold of the back of his jacket.

"Doctor, the ground's got my legs".

"I've got you".

"Okay".

Nasreen pulled Tony out of the ground.

"Don't let go", Amy told the Doctor.

"Never".

"Doctor, what is it, and why is it doing this?"

"Stay calm. Keep hold of my hand. Don't let go". The Doctor turned to Nasreen and Tony. "Your drill, shut it down. Go. Now!"

They ran out as the Doctor and Elise held onto Amy.

"Can you get me out?" Amy asked.

"Amy, try and stay calm. If you struggle, it'll make things worse. Keep hold of my hand. I'm not going to let you go". The Doctor stood up and tried to pull Amy out, but fell backward and let go.

Amy slipped further down the hole. "Doctor, it's pulling me down. Something's pulling me!"

The Doctor grabbed her arm. "Stay calm. Now, hold on till they can just shut down the drill".

"I can't hold on!" Tears filled Amy's eyes. "What's pulling me? What is under the earth? I don't want to suffocate under there".

"Amy, concentrate. Don't you give up".

"Tell Rory..." Amy's head was just barely above the soil.

"No. Amy! Amy, no!"

Amy let go and disappeared into the hole.

"No!" the Doctor yelled, digging at the soil.

Nasreen and Tony ran in as Elise wrapped her arms around the Doctor's neck. He placed a hand on her back as he felt tears hitting his neck.

"Where is she?" Nasreen asked.

"She's gone. The ground took her", the Doctor told her. He stood up and paced as he tried to come up with a plan.

"Is that what happened to Mo? Are they dead?" Tony asked.

"It's not quicksand. She didn't just sink. Something pulled her in. It wanted her".

"The ground wanted her?" Nasreen asked.

"You said the ground was dormant. Just a patch of earth, when you first saw it this morning. And the drill had been stopped".

"That's right", Tony said.

"But when you re-started the drill, the ground fought back".

"So what, the ground wants to stop us drilling? Doctor, that is ridiculous", Nasreen told him.

The Doctor knelt down and soniced the hole. "I'm not saying that, and it's not ridiculous, I just don't think it's right". It suddenly hit him, "Oh, of course. It's bio-programming".

"What?" Nasreen asked.

"Bio-programming!" The Doctor stood up and clapped his hands together. "Oh, it's clever. You use bio-signals to resonate the internal molecular structure of natural objects. It's mainly used in engineering and construction, mostly jungle planets, but that's way in the future and not here. What's it doing here?"

"Sorry, did you just say jungle planets?" Nasreen asked.

"You're not making any sense, man", Tony said.

"Excuse me, I'm making perfect sense. You're just not keeping up", the Doctor told him.

Nasreen laughed and looked at Tony before crossing her arms over her chest.

"The earth, the ground beneath our feet, was bio-programmed to attack".

"Yeah, even if that were possible, which, by the way, it's not, why?" Nasreen asked.

"Stop you drilling. Okay, so we find whatever's doing the bio-programming, we can find Amy. We can get her back". He shushed them, hearing something.

Elise could hear it too.

"Have I gone mad? I've gone mad".

"Doctor", Nasreen said.

The Doctor shushed her. "Silence. Absolute silence. You've stopped the drill, right?"

"Yes".

"And you've only got the one drill?"

"Yes".

"You're sure about that?"

"Yes", Tony said.

The Doctor laid down on his stomach with his ear pressed to the ground. "So, if you shut the drill down, why can I still hear drilling? It's under the ground".

"That's not possible", Tony told him.

The Doctor jumped up and ran over to the computers, sonicing them.

"Oh no, what, what are you doing?" Nasreen asked.

"Hacking into your records. Probe reports, samples, sensors. Good. Just unite the data, make it all one big conversation. Let's have a look. So, we are here and this is your drill hole. Twenty one point zero zero nine kilometers. Well done".

"Thank you. It's taken us a long time".

"Why here, though? Why'd you drill on this site?"

"We found patches of grass in this area, containing trace minerals unseen in this country for twenty million years".

"The blue grass? Oh, Nasreen. Those trace minerals weren't X marking the spot, saying dig here. They were a warning. Stay away. Because while you've been drilling down, somebody else has been drilling up".

A picture popped up on the screen.

"Oh, beautiful. Network of tunnels all the way down", the Doctor said.

"No, no, we've surveyed that area", Tony told him.

"You only saw what you went looking for".

"What are they?" Nasreen asked, pointing to three dots.

"Heat signals. Wait, dual readings, hot and cold, doesn't make sense. And now they're moving. Fast. How many people live nearby?" the Doctor asked.

"Just my daughter and her family. The rest of the staff travel in", Tony said.

"Grab this equipment and follow me".

"Why? What're we doing?" Nasreen asked.

"That noise isn't a drill, it's transport. Three of them, thirty kilometers down. Rate of speed looks about a hundred and fifty kilometers an hour. Should be here in ooo, quite soon. Twelve minutes. Whatever bio-programmed the Earth is on its way up, now". The Doctor left the room, equipment in hand, with Elise following.