Linking 1390 London to Waterdeep

[Thomas Bowman]

First a Map

And here is an article describing London in 1390
http://www.medievalists.net/2016/10/1390-ad-london-in-the-late-middle-ages/
Now a map of Waterdeep

Now lets suppose the sewers connected, a long forgotten gate opens up and connects the underground of London to Waterdeep. Some Londoner discovers this first. What's likely to happen?

 

[Thomas Bowman]

Londoners that make their way into Waterdeep are 1st level fighters with maximum hit points scores modified by their constitution scores, or they are 1st level Rogues, this should simulate the realities of medieval London., or else they are commoners.