[Over a shot of future Luke writing the letter
Professor, I hope this letter finds you well. As for me, I am in quite a prediciment. you see, the London we know and love has been thrown into absolute chaos. to complicate matters, the calamity I speak off does not take place in your time. This may be difficult to believe, but I am writing to you from 10 years in the future. I know this is a lot to take in, but I'll explain it all soon. For now, I ask that you head to the clock shop on Midland ...