It was only a matter of time before I did a Doctor Who and/or Loki fanfiction. This takes place about season 3. Think of Ava as randomly inserted before Martha. Gosh, I love David Tennant. Also, I've made up some aliens and other things, so don't panic or try to correct me. And I'm also not British, so some phrases may be off.

Ava jumped back as the door swung open, revealing a tall man with messy brown hair wearing glasses. He held some type of device that glowed blue in his hand.

"Sorry, just checking for some residual energy. Preferably from a Sanguinal spacecraft. They usually tend to go for electronics and such, just feed off the energy." He seemed to ramble off. "Probably why they're in this electronics store and hey, are you here all by yourself?"

His question caught her off guard and she scrambled for an answer.

"Um, yes, I'm the lowly intern and they all took a day off and left me here." She explained. "Probably cause it's a Saturday."

He nodded at her answer, staring at her a minute before leaving the room. Ava rushed after him.

"These things, these Sanginel-"

"Sanguinal." He corrected her.

"Sanguinal. They aren't harmful, are they?" Ava asked, almost jogging to keep up with his long stride.

"Only if they manage to absorb enough energy to create a laser blast, which may happen. Then they'll probably go off into the world and absorb as much energy as they can, destroying as much as they can in their path." He didn't look at her and instead began using the object in his hand to seemingly search for the creatures. "Ah! Found them! In the sockets, of course."

He had pressed the glowing blue object against the socket as he said this, then put it in his inside jacket pocket.

"Come on now, don't want to bother this nice lady anymore. Come on out." He spoke into the socket.

Almost immediately, what looked like lightning flew out of the socket and onto the ground in front of them. It grew arms and legs and a head and there looked to be a handful of them. Ava's eyes grew wide at the sight.

"Sorry to evict you, but it's not nice to take energy without asking for it. I bet you didn't even ask her, did you?" He gestured to Ava, who looked at him and the creatures quite confused. "Now please leave."

The creatures shrieked and zapped him, going back into the socket.

"Ah! That wasn't nice. Guess we're going to have to do this the hard way. They can't be able to leave this shop." He turned to Ava. "Run. Now. As fast as you can away from here. I'll handle them."

Ava paused for a second before running out of the shop. She sprinted down the street before the shop exploded behind her. She fell to the ground and looked behind her, at what used to be her place of employment. She wondered if that man made it out alive. She slowly stood up, still a bit shaky, and looked around for him. She really hoped he was okay. She spotted him walking down one of the alleys.

"Wait! Wait!" She ran to him. "Who are you? What's your name? How'd you know what to do with those things?"

He turned to look at her.

"I'm the Doctor." He replied simply.

"The doctor of what?" Ava asked.

"Just the Doctor." He said. Ava looked at him questionably.

"You can't just blow up a store and leave." She said finally. "How am I supposed to explain that?"

"You can't, really. Most people wouldn't believe you. What's your name anyway?" He suddenly asked, as if remembering.

"Ava. Ava Carson." She told him. His eyes seemed to get a bit bigger before returning to normal.

"How'd you like to travel with me, Ava? Through space and time. Have a couple of adventures like that one in the store?" He asked her. She gapped at his sudden change.

"Go with you? Why would I do that?"

"It's rather fun. We can go anywhere you like, see the universe, see anything really." He gestured around as he talked. "Plus it can get a bit lonely traveling by yourself. What do you say?"

Ava stared at him for a while, thinking. Stay and have to explain that whole ordeal in the store? Or go with him anywhere?

"I'll go with you. Sounds more fun that staying here and dealing with that." She pointed back towards the store. "Lead the way then."

The Doctor lead her further down the alleyway. He stopped in front of a blue box.

"What's this?" Ava asked.

"My spaceship." He replied, putting in a key and turning it.

He opened the door and walked inside. Ava looked inside and saw something definitely other worldly. It was bigger on the inside! With all types of lights and contraptions. Ava looked at the exterior of the box again before looking inside again. The Doctor was pushing some of the controls.

"Take your time. Get used to it. Surprises everyone at first." He said casually.

Ava walked completely around the box before running inside.

"It's a trick. Either the outside's too small or the inside's too big." She said.

"It's the outside. Cloaking device." The Doctor replied.

She looked all around the inside, not believing her eyes. She touched the railing and walked over to the giant contraption in the center, where the Doctor was.

"Do you mind closing the door? Can't go traveling through time and space with the door open." He said.

Ava walked back and closed the door, still having a hard time believing what was right in front of her. Then she walked back where he was.

"Where to? Another planet? Another time? Another planet and another time?" He asked her, standing with his hands in his pockets, awaiting her answer.

"1930. When prohibition was in effect and criminals like Bonnie and Clyde ran the town." Ava rambled off her favorite time period.

The Doctor smiled at her enthusiasm. He began pulled levers and pushing buttons rapidly. "Right then, hold on tight. It gets a bit rough."

First chapter done! Promise it gets better, but I just needed to introduce everything. And sorry it seems rushed, I'm a bit impatient to get this story rolling.