Jespah once the first lurok review is posted (which it is) for an episode you can say whatever you like about that episode. If someone hasn't watched it yet they should avoid the thread until they do. It's all the other episodes which shouldn't be referenced.
There's actually a lot of backstory but it's subtle. When you've watched the whole thing the pilot is quite a different episode!
As to the underaged, gah everyone seems like that to me these days. I guess it's a tv reality. She looks older than Simon who is a doctor.