Plugin & URL Routing / hooks

I’m planning to develop a plug-in that displays facebook albums within wordpress.

There are plenty of plug-ins that display the content of an album (by passing in the album ID)
However, I can’t find one that I can essential pass in the pageID (or username), and have it list out the albums.
For example: http://graph.facebook.com/facebook/albums lists the albums for the page “facebook”

What I want to do, is have a shortcode that I could put on a page (Gallery) for example.
Then, the available galleries would be displayed in a table or some other markup.

Here’s the tricky part:
I want a user to be able to click on a gallery, and be shown the contents (images) within that gallery, going to a page such as /gallery/fathers-day-stories
This would then show the contents of http://graph.facebook.com/10150294959176729/photos
(i can work out how to get the ID from the url-slug friendly name later)

Is there a “hook” i can have in a plug-in to allow anything after /gallery to be handled by my plugin?