You're a young Time Lord travelling with the 11th Doctor and Amy. The TARDIS had been hit with something and was crashing. The TARDIS teleported four of you away. The only problem? you were all sent to different places. You could still talk to the Doctor in your head due to your psychic bond, so that was a win.

You had ended up in a strange place that looked like a classroom. The teacher, Mr Aizawa stopped his lesson and used his scarf to restain you. "Who are you? how did you get into UA?"