Uniform Stealing Board

A princess and her maid are confined to their quarters, and need a way to escape. Two women in black cloaks visit them, intent on mocking the princess' circumstances. The princess and the maid lure them inside, knock them out, and steal their cloaks.

Starts at about 4 minutes.

https://www.youtube.com/watch?v=886pajA7qVM

No consequences for the victims

Actually, the victims show up again in the beginning of the next episode. They confront the maid and accuse her of knocking them out, but the maid denies it and says they just bumped into a doorframe and knocked themselves out.

Starts at 2:20.

https://www.youtube.com/watch?v=da4qpY95llY