So Leia Skywalker is on the Empire's side? Yeah I think I can deal with that. I'll start work on a CS now.

EDIT: Since so much of Star Wars is no longer Canon (thanks disney) I think the only Canon reference to Midi-clorians is in The Phantom Menace. However, if you ignore disney's decanonization then this page on the wookiepedia explains Midi-clorians very well - [url=http://starwars.wikia.com/wiki/Midi-chlorian]Click Here[/url]