Not too long! A few hours, maybe? It felt like forever and I was definitely finding feathers for at least a week after the fact.
Here is the TL;DR version that will probably turn into a a very not-TL;DR because I'm really terrible at actually making those:
The whole thing was B.R.O.D.O.K. who was actually M.O.R.D.O.K in disguise. It was a terrible disguise, but we felt kind of bad for him. He's not the smartest super villain even if he should be.
Apparently, he was using his "Bro" form to try and date women, but because he's an eternal bag of sleazy grossness, he was rejected. So, he used this "laser" to turn them into giant "monsters" that terrorized LA for a bit. We managed to get them back to normal except for Bridgitte, who wanted to stay a dragon. Which, I don't blame her! That has to be pretty amazing. I think she was a vegetarian, too.
Plus, having a dragon friend to fly you around when you need to travel? Way better than any private jet your would-be heiress fortune that you will never see could buy.