What the hell is going on in Katy Perry's new Music Video?

Ever wanted to go to a neon rave, in a totally inaccurate representation of ancient Egypt? You are in luck — Katy Perry just released her music video for "Dark Horse." It's... well you just need to watch it, because I'm struggling to come up with the words to describe this kaleidoscope of crazy.

Why was she telling that dog to GTFO? Are people turning into sand or objects, or both? Where does she get those marvelous wigs? Is that a light-up, head piece that changes to her mood? I just have too many questions. Please help me.