You’re a whose planet was caught in the Time War. Luckily, you managed to survive and escape, but the rest of your kind didn’t. Now, you’re the last of your species.

One day, you were exploring a planet you had landed on when you came across an out of the ordinary tree. Upon further inspection, you realized that the tree had a door, an unlocked door at that. You entered the “tree” and immediately noticed that it’s bigger on the inside. Far bigger on the inside, and the interior looked like some sort of spaceship. After a while of exploring the ship, something came up behind you and knocked you out.

When you woke up again, you were in a different room. An apparent prison cell. Outside of your cell stood a man.

“You snuck into my TARDIS.”