The Doctor pecked away at the buttons of the TARDIS console while Laura looked around amazed.
"It's so big! How is there so much in a box?"
The Doctor loved to see them when they were amazed; the twinkle in their eyes. "It's Time Lord technology. Transdimensional engineering. Those Time Lords were stuffy, boring and decadent, but they were very clever."
"So, you're one of these Time Lords?" Laura said, still looking up at the console room.
"Yep."
"So, are you decadent?" Laura ran her hands along the railings.
The Doctor frowned. "No. I wouldn't think so. "
"So this 'transdimensional engineering' let's it be bigger on the inside?"
"That's right."
"Huh..." Laura said, taking it all in.
"You're taking this very well."
"Well, after you read enough comic books, I guess you become accepting of a lot of strange possibilities." Laura turned to The Doctor. "What's it called? The ship. What's it called?"
"The TARDIS." The Doctor said with a huge grin.
"Well, Doctor, where are you and your The TARDIS taking us?" Laura said, joy showing all over her face.
The TARDIS grinded and wheezed to a stop.
"Let's take a look!" The Doctor whirled around toward to the viewscreen. "Hmmm...looks like we're still on Earth."
"I like Earth." Laura leaned in over the Doctor's shoulder.
"Good. And it's prehistoric Earth."
"Prehistoric? Dinosaurs or cavemen?"
"...Cavemen. We're at around 30,000 BC, I believe...Hmmm..."
"What's the matter?"
"The last time I ended up on Stone-age Earth it wasn't the greatest of trips."
"Really?"
"Yes. I nearly bludgeoned a bloke to death with a rock...Shall we have a look around?!" The Doctor twirled around and headed quickly toward the door.
"Wait, what?..." Laura quickly chased after The Doctor. "What do you mean, Doctor?...Doctor?..."

The Doctor and Laura waded through a sea of high grass. A bright and vibrant blue sky shined overhead. Laura surveyed the landscape with excited glances. "It all looks so normal"
"What?" The Doctor pushed his way through the grass with, what seemed like, focused purpose.
"Well...It's so far in the past, but it just looks like...well...today...I mean the present...I mean my time period...Sorry, I was just thinking out loud..."
"Well it's true, Laura. Not much has changed, it's a short hop from your time to now. Though if you look you'll find some extinct species of plants and animals."
"Wow."
"It is very 'wow' isn't it?" The Doctor said, with a smug smile.
"Where are we?"
"Africa! The cradle of humanity! Every human being, every king, peasant and prophet, every human that has touched dust on an alien planet and looked up at foreign constellations trace their origins back here. They grew from here. They've already started to spread out across the other continents. They have no idea they'll spread out among the stars. They have no idea how much they'll change the universe..."
Laura stopped and stared at The Doctor. She was struck with sense that everything was impossible. It was surreal. She was in the stone age with a man with a box that travels through space and time and he's talking about humanity colonizing the stars.
"Doctor, I'm dizzy."
The Doctor turned around to face Laura. "Why? Are you sick? Did you eat something? Don't eat anything. You don't know where it's been!"
"No...I just...I'm in Africa...I'm in prehistory. I'm apart of prehistory!"
"Oh! You have time-travel sickness!"
"Really? Does it happen a lot?"
"I don't know, I just made it up."
Laura let out a breath of exhaustion and sat down, the grass crunching under her.
The Doctor crouched down to look Laura in the eyes. "Look, Laura, you're a strong girl. A little time travel isn't going to hurt you...the things we find once the actual time traveling is over on the other hand...You can handle those things too. You're courageous. I see it in your eyes. So, just take a few breaths and remember I'm right beside you." He reached his hand out to Laura. "And if you ever feel unsafe or not ready for what I might show you, all you have do is say the word and I'll take you home. Deal?"
Laura took The Doctor's hand and let a small smile slip onto her face. "Deal." The Doctor gently pulled her to her feet. "What do we do now?"
"Well, I've learned that if The TARDIS takes me somewhere that I hadn't planned on going that means there must be trouble...So, what do you say we find it?"
Laura laughed. "Lead the way!"
Laura and The Doctor marched forward through the tall grass in their pursuit of trouble.