There are many spoilers below. When I saw this yesterday I went in completely blind. Everything was a surprise. No, there is no plot revelation. But a spoiler is a spoiler, so this warning is relevant.
Butterflies, and the 4 M’s: moth, master, maid…, and mannequins? TDoB starts slowly with a theme that is repeated as to be read from a script. Nothing is as it seems. And what you think is going on is going on – you can see it as well as hear it. Imagery describes each plateau. Hannibal Lector’s words apply: The significance of the moth is change. Caterpillar into chrysalis, or pupa, and from thence into beauty.