With a massive lurch, the TARDIS jolted to a stop. The Doctor hopped dizzily to his feet, grabbing hold of the side of the wall for support. Putting a hand to his head, he blinked a few times and stumbled forward. Excitement bubbled in his stomach, an insatiable curiosity for the unknown that resided outside the door of the TARDIS.

Looking down at his hand, he frowned. Deep red blood stained his fingers. Closing his eyes momentarily, he shook his head and stumbled forward to the door. The adrenaline rushing through his veins pumped twice as fast as any human's ever could.

Many respected the Doctor for his outstanding bravery and selflessness, but in all reality, he was a rash and somewhat selfish being. He was a junkie. He couldn't stand not looking outside that door. It was what kept him going.

This was the feeling that he lived for. The feeling that anything could happen, that anything was possible. That the difference between life and death lay outside that door, awaiting his presence.

He opened the door of the TARDIS and looked out. Bright light stained his eyes as he scanned the premises. There was a large fissure in the ground, light flooding out as the floor quaked beneath his feet. His eyebrows furrowed in alarm, but before he could further explore, the TARDIS pulled him back inside, traveling yet again.

The Doctor attempted to hop back to the engine, but he didn't get very far before he was knocked sideways. Gripping the railing, he held on as tight as he could.

He quickly took in his surroundings, assessing the damage, though that probably should have been the last thing on his mind. He really didn't have any idea where he would end up, let alone when. He remembered when the TARDIS traveled to the end of time in attempt to ward off Jack Harkness. But even then, the trip wasn't this rough. The only conclusion he could come to was the possibility of falling into a parallel universe—a phenomenon in itself.

The engine continued pumping, sounding its unique siren. The dynamic, indescribable noise it was known for. The Doctor noticed a few wires poking out, as well as some panels that seemed to have accumulated a fair amount of damage. As his eyes trailed to the floor of the TARDIS, his hearts nearly stopped completely. Two young men lay sprawled on the ground, seemingly unconscious.

He stared at the intruders. How was it possible? Then again, it had happened before. He remembered his more recent experience with Donna. It was highly unlikely that these men were in his TARDIS for the same reason.

The Doctor wanted nothing more than to question them, examine them, ask them how on Earth or any other planet they got inside his TARDIS sans detection. He could at least scan them when the TARDIS finally stopped.

He looked at them again. The intruders were both young men, or so the Doctor could gather from what he could see from his vantage point. One had lighter hair than the other, but both wore relatively the same attire. Heavy jackets and jeans. He couldn't shake the feeling that they seemed vaguely familiar—as if he'd seen them somewhere before. Then again, he was a time traveler, so it might not be so strange if he had. The Doctor squinted again. He attempted to step forward, but the TARDIS shuddered and threw him back toward the wall.

The spaceship shuddered to a halt, and the Doctor let go of the railing. He managed to hop over to where the boys were without stumbling too much. The TARDIS floor swayed under his feet. Dizziness. Blinking furiously, he pulled out his sonic screwdriver and began to scan the intruders.

Both of them were human—his scan showed that much. As he continued to scan them, he glanced at the TARDIS monitors. He felt his body tense a bit as he stared at the information on the screen. Of course it was possible, but highly improbable. He furrowed his eyebrows, glanced back at the boys, then toward the door. They weren't conscious. He could take a quick look outside, couldn't he? Let curiosity get the best of him….

He opened the door of the TARDIS and looked outside. Another wave of adrenaline hit him, quite possibly his favourite feeling in the world. The rush of a new experience. "Impossible," he murmured, a smile breaking through his bewildered expression. "Brilliant. I've never landed in a plane before."

But before he could further explore, the TARDIS was traveling again. The intruders, however, weren't. "What?" the Doctor half-shouted in confusion as he spun back around, watching the boys' forms began to blur and disappear. The spacecraft trembled and shuddered through space of its own accord yet again, flinging the Doctor across the floor. He grabbed hold of the edge of the ramp and held on, wondering when and where the TARDIS would finally stop.