Author's Note: So technically this is a cross-over of many different movies, and fan fictions and such but it's just taking little snippets of ideas. This is a primarily a Doctor Who fic. This is a blanket disclaimer stating any and all characters written about are not owned by me, neither are the settings I use. This is also immediately before the episode where the Doctor got into the TARDIS and exploded it.

Chapter 1:

"It's been 5 years since we were dropped off into the parallel world to make a life for ourselves." The doctor thought, as he walked into his job at UNIT. He really didn't want to work at Torchwood, no matter how much Pete or Rose tried to convince him otherwise. He wanted to do this on his own no handouts. The only thing he took, was the paperwork, and that was only because he technically didn't exist on this world. He walked the same path he took every day through the hallway. And like every time he felt a slight tingling go on in the back of his head. Like something was there that really shouldn't be there. He shook his head a bit and continued down the hallway, really wishing he had been left at least a sonic screwdriver. "Doesn't matter," he thought twirling his silver wedding band with Tardis blue gems, "I have one being made in my office". Heading in said office, he sat down and begun to look through his paperwork.

"How can they have possibly given me so much paperwork!?", he said pulling through his hair.

"Be happy it's only that much! The boss seemed really worked up today."

He whirled around in his chair, startled with his sonic screwdriver (mind you it's only half finished). Donna Noble, his amazing secretary was standing there laughing as he pointed at her, with his "weapon".

"Anyhow, here's a note from Rose. She's really hoping you'll meet her at the café down the street for lunch. She say's around 4:00 if possible. Also you got a message from Pete. Asked if you could swing by today and look at something they discovered recently."

"Thanks Donna…I'll get right on responding to those."

"You better!" She replies going off in a huff. The doctor can't help but smile. Donna might appear brash, but she truly was a remarkable person, even in an alternate reality. "Well," he thought turning back around, "I had better finish off my paper work for today. Want to get back out into the field."

-Meanwhile-

A doctor was walking down the same hallway, the Doctor was in before. Looking around quickly, he walked up to a door, that was previously invisible. He entered the room, as he allowed his eyes adjust to the dimness. Inside was his lab assistant, and quite the assortment of aliens and animals.

"So what's the update, on the cat we just injected with Serum B? Did it respond just like the others?"

"Yes," the assistant said, looking slightly upset with this news, "I really think we should get the Doctor and ask what he thinks of the situation."

"We can't get the Doctor. You know that!"

"Sir, I believe this is way out of our control. We have no idea what could happen if this stuff leaks even a little bit. You know it absorbs through the skin. We could have a pandemic on our hands."

"This is a cure! Has no side effect that we know of at all! Can you imagine? The human race with increased strength, faster movement, and accelerated healing. The Doctor wouldn't want us to have it. Would say it's before our time. I say to hell with that! To hell with him thinking he knows best! The human race will thank us for this discovery."

"Alright sir," he responds weakly.

"I believe it's time for human testing."

"Sir, I'm not willing to go along with this. We haven't brought it up to our superiors yet. And it's not even fully tested yet. We have no idea what it could do to us"

"With or without you, I am testing this!" The doctor proceeded to walk over to the testing table. He grabbed a needle and injected the serum straight into his arm. "I'm going to be immortal, invincible, and no one will be able to stop my upgrading of the human race!"

The assistant started walking backwards and the doctor fumbles and falls to the ground, undergoing what looked to be a lot of pain. He fumbled backwards, found the knob and turned the door, running for where he knew the office would be.

"Please Donna, I'll remember to contact Pete, and Rose when….." The Doctor trailed off finally looking up. "Who are you, and why do you look so…scared?"

"Sir, we might have a problem." He then proceeded to tell the Doctor exactly what happened.

"No…." He sat there looking stunned then tore out of the room looking for the perception filter he was sure was sitting around somewhere. Ripping open the door, he looked around and couldn't find the doctor anywhere. "Where is he?" he said lowly, pinning the assistant down with a stare.

"I don't know sir"

"Show me the specimens, you used for such and experiment."

The assistant walked over to the rat cages. The doctor proceeded to take a healthy rat out of a cage, and put it into the cage with the contaminated one.

"Do you know what you just unleashed into the world?" The sick rat began to advance upon the healthy one. "This is what is commonly called the Soldier Serum. It was given to the captured Sontarons, to fight other Sontarons. This race was almost unbeatable. It loved was, loved destruction. How do you defeat something like that? There is a simple answer to that question. You pump his muscles, you improved his healing, and his speed. Then you give him the hatred, for others like himself. You give him the urge to spread his sickness into other Sontarons, to kill other Sontarons..but there was one side effect they didn't count on….the urge to kill all creatures. To maim, kill, even eat them. They have no morals, and cannot be reasoned with. They lose all thought processes, and slowly turn and eat anything in sight. There metabolism is speed up, of course with all the energy they are exerting. What you just made, is a Zombie. And the worst part is, is that this is BANNED, and has been DESTROYED almost everywhere in the world. There is no cure within reach. I have no ability to travel in space anymore, and that is the only place to actually cure these people." The rat at this point jumps, pins down, and begins feasting on the other rat.

"We can't stop this? How can we not stop this! There is always a cure."

"The only chance we have is minimizing the damage, and all we have to do is find…" (A loud scream occurs) "Never mind looks like we found him"

"Allon-sy", the doctor says grimly charging off in the direction of the screams.

Authors Note: Ok, I know there isn't much Rose, and Doctor here but there will be later. And no it isn't going to just be meta-crisis, but 11 as well. Anyhow if you liked it I would truly appreciate any and all ideas/pointers. I haven't seen any zombie fics with the Doctor, and wanted to see what I could do with it. Thanks for reading!