Disclaimer: I do not own Doctor Who. Doctor Who is owned by the BBC.
Prologue.
It was 5 o'clock. Young Adam finished his day as a guide at the National Gallery of Scotland. It was Saturday, and he had stayed with friends for a drink in a pub. He walked briskly through the streets of Old Town when suddenly he stopped dead.
He couldn't move; something was wrong.
"Are you alright, boy?", a woman who walked by his side asked him.
Adam could only say "I don't know".
And suddenly, in the middle of the street and to the astonishment of the other passers, Adam vanished into nothingness.