A/N I'm sorry it's late, I just wasn't happy with it yesterday. This chapter hasn't been beta-ed so they'll probably be some mistakes, please point them out. Enjoy!

Big Brain Motel

The wheezing sound of the TARDIS filled the room as papers started flying all over the place. The TARDIS fully materialized and Dean was the first one to get out, needless to say, he wasn't a big fan of flying. He was almost shocked to be back in their motel room. His brain was going into overdrive as he tried to remember dealing with anything like the Laplji or if other hunters mentioned dealing with weird demons. He came up with nothing.

Cas exited the TARDIS shortly after Dean, "The Doctor's ship is very peculiar," Cas said rubbing the outside of the TARDIS.

"Do you two need a moment alone?" Dean joked. Cas just gave Dean his I don't understand stare.

Then the Doctor and Sam walked out of the TARDIS, "But how can I be reading this? You said it's written in a different language but I see it as English."

"That would be the TARDIS translations circuits. They can translate almost any language in the universe."

"That is really useful. Dean, Imagine how much easier it would be to do research if everything was translated into English."

"That would be nice. Speaking of research, we know what we're dealing with but we don't know where they're holding up." Dean said.

"Cas, do you have any ideas?" Sam asked, "You've been in town the longest."

"There are some abandoned buildings on the outskirts of town, I checked some of them but they were empty." Cas bent over and picked up a map from the floor and placed it on the table in the corner. There were red dots on all of the abandoned buildings in this town, turns out there are a lot of them. "I have already searched through this section of the city," Cas said as he pointed to a section of the map."

"Okay, how else can we narrow down our search?" Sam asked.

"Well," The Doctor began, "A Laplji spaceship wouldn't have been able to land in an area with a lot of buildings, they are pretty large ships."

Sam grabbed a pen and started crossing out parts of the city, significantly narrowing down their search area.

"And I'm pretty sure there is some sort of experiment going on, I'm just not sure what," The Doctor said running through different theories in his head.

"That means it would have to be a building away from prying eyes," Dean said and Sam narrowed down their options even more.

"Well we've certainly narrowed the buildings down," Sam said, "They're either in an old metalworking facility or in an abandoned farmhouse. Both are fairly large and in the middle of nowhere."

"Right then, allons-y!" The Doctor said turning towards the TARDIS.

"Hold up," Dean said, "First of all, I am not eager to get back in that thing-"

"Oi!"

"And two, we'll cover more ground if we split up."

"Right, she's not too good at small jumps anyways."

"Cas can you give us a ride to the park, that's where we left baby."Dean said, "We'll split up the same as before. The Doctor and I will take the factory and you two can take the farmhouse." Dean grabbed his jacket and headed for the door.

Park

On the ride to the park, everyone was silent, everyone was lost in their own thoughts. Dean was trying to figure out how many demons were behind this, and what would be the quickest way to gank their asses. He was pretty sure that when they killed the demon in Mr. Crocket some of the other 'demons' they killed were actually aliens possessing someone, so the angle blades would work. Sam was trying to figure out why demons and aliens would be conducting experiments together in the middle of nowhere and what they were hoping to accomplish.

The Doctor's mind was racing, he was having similar thoughts as the Winchesters but he was also trying to figure out what brought aliens here and how to save as many lives as he could. The longer a Laplji possessed the lower the survival rate is for the hosts. He also didn't want to kill the Laplji, but he assumed that the Winchesters and Cas did.

They arrived at the park and Dean quickly rushed over to baby, with Sam right behind him, and opened the trunk. He put some weapons into a bag and handed it to Sam. The Doctor merely watched them from a distance, not wanting to know what kind of weapons were in the trunk, but he noticed how practiced the two were, knowing what to grab without communicating. It was pretty clear they did stuff like this pretty often.

"Ready to go Doc?" Dean asked

"Yes. See you two later then!" The Doctor gave a cheery smile then got into the passenger seat of Baby.

"Stay safe Sammy, call me if you find anything."

"Will do. Same goes for you."

The Winchesters each got into their respective cars and drove off in different directions.

Impala

"How long have you and your brother been hunting things?" The Doctor asked eager to break the silence.

"Ever since our mom died in a mysterious fire when I was 4."

"Blimey, that's a long time then."

"We're the best at what we do, saving people and hunting things. It's the family business."

"It's an unusual business. Well so is mine."

"What is your business, Doctor?"

"I'm just a traveller but I tend to save planets and people from destruction. And I try to preserve the timeline."

"Now that's unusual. Do you do it alone?"

"At the moment yeah. I had a friend, but she's gone now."

"What happened?"

"She's just gone."

The Impala was plunged into silence as old memories started to replay themselves in the Doctor's head and Dean tried to process what the Doctor told him about saving planets. The most he and Sam had saved was the planet a few times from various apocalypses.

Soon enough they rolled up to the abandoned metalworking factory, the word abandon fitting the building perfectly. Some of the outside walls and pipes were completely covered in rust and part of the roof was caved in.

"It's certainly abandoned." The Doctor said getting out of the car.

"Yeah," Dean mumbled as he walked over to the trunk. He took out an angel blade and held it out to the Doctor, "Here, take this."

"What for?"

"To defend yourself, it works against demons."

"I don't like weapons or violence," The Doctor said as he strode off towards the building.

How does he save planets without weapons? Dean thought, This guy is nuts.

Dean jogged to catch up to the Doctor and they slowly started making their way through the factory.

"It doesn't look like anyone has been here for years," The Doctor said after they had searched around for a bit.

"You're right, I don't like this." Just then his phone rang, it was Sam.

Farmhouse

Sam and Cas pulled up to the farmhouse, there was no sign of anything. It just looked like one of those creepy houses that were a regular part of their job. Sam pulls out his gun loaded with devil's trap bullets and Cas pulls out his angel blade and they walk up to the house. The front door squeaks open and they step inside, it takes a moment for their eyes to adjust to the darkness inside and Sam pulls out his flashlight. They split up and clear the first floor then they move up to the second.

"Sam!" Cas calls and Sam runs into the room where Cas stood looking out the window, "They're in the barn, I saw someone walk into it."

Sam stepped closer to the window to get a better look at the barn, it was significantly more run-down than the house but there was a weird light coming from it, "I'm calling Dean," Sam quickly dialled his number and put the phone on speaker.

"Look out!" Cas called just as a demon came up behind him. Sam fired off a shot but the demon was in the process of disarming him and the shot missed. Four more demons came into the room and a fight broke out. Sam was able to pull out the demon knife and kill the demon that attacked him.

"Did you find them, Sammy?" Dean asked through the phone. Sam was too busy trying to fight off demons to answer and Cas wasn't holing up to well himself. Dean only heard sounds of a fight through the phone, "Sammy?" Dean called again.

Then someone picked up the phone from where Sam had dropped it, "If you ever want to see your brother alive again you better hurry, he won't be alive much longer." Then the line went dead. Sam had been knocked unconscious and Cas has his own angel blade pointed towards his heart.

Factory

Once the line went dead Dean and the Doctor sprinted towards baby, the Doctor barely shut his door as Dean took off. The Doctor thought Dean was driving fast before, it was nothing compared to how fast he was driving now.

Dean was laser-focused, the only thing that mattered was batting Sammy back and nothing would get in his way.